Foretravel Owners' Forum

What is the procedure to check the oil level by using the keypad on an Allison 4060 transmission?

The following procedure will allow you to check your transmission fluid level from inside the vehicle, and it is also more accurate than checking via the dipstick.

To enter the transmission oil level display mode, press the UP and DOWN arrow buttons simultaneously on the mode selector. A two-minute countdown begins when the following conditions are met:

Engine is at idle
Transmission sump oil is at operating temperature
Transmission output shaft has stopped
Transmission is in neutral
Oil level sensor is functioning properly
The display should show *8 and then count down to 0. Note that it will take two minutes to complete this countdown. During the countdown, the display flashes and a count (8,7,6,5,4,3,2,1) occurs reducing by one digit every 15 seconds.

NOTE: Failure to meet any of the above conditions will stop the two minute countdown. The shift selector will then display one of the following Oil Level Codes to show the reason for the countdown interruption. The countdown will resume where it stopped once all conditions have been met. Shift selectors with single digit display will display the codes one digit at a time. Shift selectors with two digit displays will display the codes two digits at a time.

 

OIL LEVEL CODE   CODE DESCRIPTION
oL 0X   Setting time too short
oL 50   Engine RPM too low
oL 59   Engine RPM too high
oL 65   Neutral not selected
oL 70   Sump fluid temperature too low
oL 79   Sump fluid temperature too high
oL 89   Output shaft rotation detected
oL 95   Oil level sensor failed
After the two minute countdown, the shift selector displays the oil level data as in the following examples:

OIL LEVEL READINGS   MEANING OF READINGS
o, L, o, K   Fluid level is correct
o, L, L, o, 1 or OL, LO, 01   Fluid level is 1 quart low
o, L, H, 1 or OL, HI, 01   Fluid level is 1 quart high
To exit the oil level display mode, press the NEUTRAL button or simultaneously press the UP and DOWN arrows twice.

 

One more prerequisite for an accurate read...coach should be level...both laterally and longitudinally.  i.e.  LEVEL.  It does matter.  Woody.

Is this that same for the MD3060 in my '95 U240?

I don't think so....................... our 95 U280 with the MD3060R doesn't have it, only available in later models.
 

I did a little more reading and was unable to figure out the year they started using, but the troubleshooting procedure should be the same.
This a a great site and is ten pages long of good information on codes and how to pull them and decipher them
https://cdn.mpparts.com/pdfs/Trans%20Codes.pdf
This link is much easier to use but I copied the information in the next post.

 SHIFT SELECTOR OPERATION AND CODE MANUAL
How to use the shift selector to read oil level and diagnostic codes on 3000/4000 Series Allison transmissions
        IT'S THE TRANSMISSION THAT MAkES THE TRUCkTM
P.O. Box 894, Speed Code 462-470-PF3
Indianapolis, Indiana 46206-0894 SA3360EN (2006/05) Litho in U.S.A. Allison Transmission Home (http://www.allisontransmission.com) ISO/QS 9000 and ISO 14001 Certified
   
 The Allison Advantage
Your Allison Automatic is fully electronically controlled. The Allison electronic controls package oversees the operation of the transmission, controlling transmission upshifts and downshifts, and providing important information on the operation of your drive system.
Through readouts on your shift selector, you will be able to monitor transmission oil levels and read diagnostic codes. This brochure will help you understand the readouts, and thereby help you enjoy long, trouble-free operation of your Allison Automatic.
Vehicle manufacturers may choose different types of shift selectors for their vehicles. The shift selector in your Allison-equipped vehicle will be similar to one of the pushbutton or lever styles as shown above.
Checking Fluid Levels
The transmission fluid cools, lubricates and transmits hydraulic power, so it is important the proper fluid level be maintained at all times. If the fluid level is too low, the converter and clutches do not receive an adequate supply of fluids. If the fluid level is too high, the fluid can aerate, causing the transmission to shift erratically or overheat.
If the transmission is equipped with an oil level sensor, oil level information can be displayed on the shift selector.
Use the following procedure to display oil level information if the transmission is equipped with the option.
To enter the oil level display mode:
1. Park the vehicle on a level surface, shift to N (Neutral) and apply the parking brake.
2.
3. The fluid level reading may be delayed until the following conditions are met:
– Engine is at idle.
– The fluid temperature is between 60 ̊C (140 ̊F) and 104 ̊C (220 ̊F).
– Transmission is in N (Neutral).
– The vehicle has been stationary for approximately two minutes to allow the fluid to settle.
– The engine is at idle (below 1000 rpm – not "fast" idle).
              PUSHBUTTON
MODE BUTTON LABEL
MODE INDICATOR (LED)
MODE BUTTON
MODE BUTTON LABEL
DIgITAL DISPLAy
DISPLAy MODE/ DIAgNOSTIC BUTTON
LEvER
PUSHBUTTON
DIgITAL DISPLAy
MODE BUTTON LABEL
MODE INDICATOR (LED)
MODE BUTTON
DIgITAL DISPLAy
DISPLAy MODE/ DIAgNOSTIC BUTTON
LEvER
 SINgLE DIgIT DISPLAy SHIFT SELECTORS DOUBLE DIgIT DISPLAy SHIFT SELECTORS
  Using a pushbutton shift selector, simultaneously press the UP and DOWN arrow buttons.
  Using a lever shift selector,
press the DISPLAy MODE/DIAgNOSTIC button one time.
  it's the transmission that makes the truckTM

    SINgLE DIgIT DISPLAy
A delayed fluid level
check for pushbutton
and lever selectors with
single digit display is
indicated by a "–" in the display window followed by a numeri- cal countdown.
  DOUBLE DIgIT DISPLAy
The indication of a delayed fluid level check for pushbutton and lever selectors with double digit windows is a flashing display and a numerical
countdown in the
SELECT/MONITOR
window display.
  Example: oL HI 1 "1" indicates 1 quart of fluid above the full transmission level.
            4. The shift selector displays the oil level data as follows:
• CORRECT FLUID LEvEL – "oL" is displayed ("oL" represents "Fluid (Oil) Level Check Mode"), followed by "ok." The "ok" display indicates the fluid is within the correct fluid level zone. The sensor display and the transmission dipstick may not agree exactly because the oil level sensor compensates for fluid temperature.
• LOW FLUID LEvEL – "oL" is displayed ("oL" represents "Fluid (Oil) Level Check Mode") followed by "Lo" ("Lo" represents "Low Oil Level") and the number of quarts the transmission fluid is low.
• HIgH FLUID LEvEL – "oL" is displayed ("oL" represents "Fluid (Oil) Level Check Mode") followed by "HI" ("HI" represents "High Oil Level") and the number of quarts the transmission fluid is overfilled.
• INvALID FOR DISPLAy – If any of the above conditions are not met, the shift selector will display "oL" ("oL" represents "Fluid (Oil) Level Check Mode") followed by "–" (for single digit display) or "– –" (for double digit display) and a numerical display. The numerical display is a fault code and indicates conditions are not proper to receive the fluid level information, or that there is a system malfunction.
The fault codes that may be encountered are shown in the Fluid Level Fault Codes tables:
      SINgLE DIgIT DISPLAy FAULT CODE
FLUID LEvEL FAULT CODE DESCRIPTION
DOUBLE DIgIT DISPLAy FAULT CODE
o, L, –, 0, X
o, L, –, 5, 0
o, L, –, 5, 9
o, L, –, 6, 5
o, L, –, 7, 0
o, L, –, 7, 9
o, L, –, 8, 9
o, L, –, 9, 5
Setting time too short
Engine speed too low
Engine speed too high
Neutral must be selected
Sump fluid temperature too low
Sump fluid temperature too high
Output shaft rotation
Oil level sensor failed*
oL,––,0X
oL,––,50
oL,––,59
oL,––,65
oL,––,70
oL,––,79
oL,––,89
oL,––,95
  Example: oL Lo 02 "2" indicates that 2 additional quarts of fluid will bring the fluid level within the middle of
the "ok" zone.
        *Report sensor failure display to a distributor or dealer in your area.
CAUTION: A low or high fluid level can cause overheating and irregular shift
patterns. Incorrect fluid level can damage the transmission.
 it's the transmission that makes the truckTM

 To exit the oil level display mode:
Primary and secondary mode:
Diagnostics
The electronic control system of your Allison Automatic is programmed to inform the operator of a problem with the transmission system and automatically alert the operator. When the Electronic Control Unit (ECU) detects a problem condition, the ECU:
– Restricts shifting
– Illuminates the CHECk TRANS* light on the instrument panel – Registers a diagnostic code
Continued illumination of the CHECk TRANS light during vehicle operation (other than start-up) indicates that the ECU has signaled a diagnostic code.
* For some problems, diagnostic codes may be registered without the ECU activating the CHECk TRANS light. Your Allison Transmission authorized service outlet should be consulted whenever there is a transmission-related concern. They have the equipment to check for diagnostic codes and to correct problems which arise.
Displaying Active Diagnostic Codes
To enter the diagnostic mode:
1. Bring the vehicle to a complete stop. Apply the parking brake. 2.
    SINgLE DIgIT DISPLAy
• Pushbutton selector: Press the NEUTRAL button or simulta- neously press
the UP and DOWN arrows twice.
• Lever selector:
Press the DISPLAy MODE/DIAgNOSTIC button twice or momentarily move the shift selector to any range and back to neutral.
        DOUBLE DIgIT DISPLAy
• Pushbutton selector: Press any range button.
• Lever selector: Press the DISPLAy MODE/DIAgNOSTIC button once.
    On motorhomes and general delivery trucks, Allison Automatic can offer primary and secondary shift schedule modes to enhance performance or fuel economy. The vehicle always starts in the primary mode. You can switch to your secondary mode by pushing the mode button.
    Using a pushbutton shift selector, simultaneously
press the UP and DOWN arrows once if the transmission does not have an oil level sensor and twice if the transmission is equipped with an oil level sensor.
  Using a lever shift selector, press the DISPLAy MODE/DIAgNOSTIC button once if the transmission does not have
an oil level sensor and twice if the transmission is equipped with an oil level sensor.
    it's the transmission that makes the truckTM

 To read the digital display codes:
Diagnostic codes will appear one digit at a time on a single digit display lever or pushbutton selector. They will appear two characters at a time on a double digit display pushbutton or lever selector.
** Diagnostic Trouble Code (DTC) – The diagnostic trouble code number referring to the general condition or area of fault detected by the ECU.
To clear diagnostic codes:
1.
2. Be sure to record all codes displayed before they are cleared. This is essential for troubleshooting. Begin operating as normal.
3. Drive the vehicle and check for code recurrence. If codes continue to recur, bring the vehicle to an authorized Allison Transmission service outlet to diagnose and repair the problem causing the codes.
NOTE: This information is designed to give you an overview of the Oil Level Sensor and Diagnostics operation of your Allison Automatic, and is not intended to replace your Operator's Manual. Please refer to your Allison Automatic Operator's Manual for complete information on Diagnostic Codes and Oil Level Sensor operation.
To order an Operator's Manual, go to Allison Transmission Home (http://www.allisontransmission.com).
Or contact SGI, Inc.
Attn: Allison Literature Fulfillment Desk
8350 Allison Avenue Indianapolis, IN 46268
Toll free: 888-666-5799 International: 317-471-4995
    SINgLE DIgIT DISPLAyS
Press and hold the MODE button for approximately three seconds until the MODE INDICATOR (LED) flashes. Release the MODE button and active indicators will not
be illuminated. To clear inactive codes, press and hold the MODE button for 10 seconds. Some codes are self-clearing and others require ignition cycles
to clear.
DOUBLE DIgIT DISPLAyS
Press and hold the MODE button for 10 seconds to clear both active and inactive codes.
 SINgLE DIgIT DISPLAy CODES
When the diagnostic mode is entered, the first code (position d1) is displayed as follows:
Example Code: 13 12
Code Position: d1 – indicates that this is the first diagnostic code listed in the ECU memory.
Main Codes: 13 - (two digits displayed one at a time) are listed first and provide the general condition or area of a fault detected by the ECU.
Sub Code: 12 - (two digits displayed one at a time) is listed second and provides specific areas
or conditions within the main code that caused the fault. This subcode indicates the problem is caused by low voltage.
            DOUBLE DIgIT DISPLAy CODES
When the diagnostic mode is entered, the first code (position d1) is displayed as follows:
Example Code: P O7 22 Displayed as: d1, P,
07, 22
The Code Position
(d1) is the first item displayed, followed by the Diagnostic Trouble Code (DTC)*,* P, 07, 22. Each item is displayed for about one second. The display cycles continuously until the next code list position
is accessed by pressing the MODE button.
              it's the transmission that makes the truckTM

 Diagnostic Transmission Codes Diagnostic Transmission Codes
  MAIN SUB CODE
CODE CODE DESCRIPTION
13 12 ECU INPUT vOLTAgE LOW
 13 ECU INPUT vOLTAgE MEDIUM LOW
 23 ECU INPUT vOLTAgE HIgH
  14 12 OIL LEvEL SENSOR, FAILED LOW 23 OIL LEvEL SENSOR, FAILED HIgH
  21 12 THROTTLE POSITION SENSOR, FAILED LOW
 23 THROTTLE POSITION SENSOR, FAILED HIgH
  22 14 ENgINE SPEED SENSOR 15 TURBINE SPEED SENSOR
16 OUTPUT SPEED SENSOR
  23 12 PRIMARy SHIFT SELECTOR FAULT
 13 PRIMARy SHIFT SELECTOR MODE FAULT
 14 SECONDARy SHIFT SELECTOR FAULT
 15 SECONDARy SHIFT SELECTOR MODE FAULT
 16 SHIFT SELECTOR DISPLAy LINE FAULT
  24 12 SUMP FLUID TEMPERATURE, COLD 23 SUMP FLUID TEMPERATURE, HOT
  25 00 OUTPUT SPEED SENSOR @ 0 RPM, LOW
 11 OUTPUT SPEED SENSOR @ 0 RPM, 1ST
 22 OUTPUT SPEED SENSOR @ 0 RPM, 2ND
 33 OUTPUT SPEED SENSOR @ 0 RPM, 3RD
 44 OUTPUT SPEED SENSOR @ 0 RPM, 4TH
 55 OUTPUT SPEED SENSOR @ 0 RPM, 5TH
 66 OUTPUT SPEED SENSOR @ 0 RPM, 6TH
 77 OUTPUT SPEED SENSOR @ 0 RPM, REvERSE
  26 00 THROTTLE SOURCE NOT DETECTED
11 ENgINE COOLANT SOURCE NOT DETECTED
  32 00 C3 PRESSURE SWITCH OPEN IN LOW
 33 C3 PRESSURE SWITCH OPEN IN 3RD
 55 C3 PRESSURE SWITCH OPEN IN 5TH
 77 C3 PRESSURE SWITCH OPEN IN REvERSE
  33 12 SUMP OIL TEMPERATURE SENSOR, FAILED LOW 23 SUMP OIL TEMPERATURE SENSOR, FAILED HIgH
  34 12 CALIBRATION COMPATIBILITy WRONg
 13 CALIBRATION BLOCk CHECkSUM
 14 POWER OFF BLOCk CHECkSUM
 15 DIAgNOSE QUEUE BLOCk CHECkSUM
  MAIN SUB CODE
CODE CODE DESCRIPTION
34 16 REAL TIME BLOCk CHECkSUM
 17 CUSTOMER MODIFIABLE CONSTANTS CHECkSUM
  35 00 POWER INTERRUPTION
16 REAL TIME WRITE INTERRUPTION
  36 00 HARDWARE/SOFTWARE NOT COMPATIBLE
 01 TID NOT COMPATIBLE W/HARDWARE/SOFTWARE
 02 TID DID NOT COMPLETE
 42 12 A SOLENOID SHORTED TO BATTERy
 13 B SOLENOID SHORTED TO BATTERy
 14 C SOLENOID SHORTED TO BATTERy
 15 D SOLENOID SHORTED TO BATTERy
 16 E SOLENOID SHORTED TO BATTERy
 21 F SOLENOID SHORTED TO BATTERy
 22 g SOLENOID SHORTED TO BATTERy
 23 H SOLENOID SHORTED TO BATTERy
 24 J SOLENOID SHORTED TO BATTERy
 26 N SOLENOID SHORTED TO BATTERy
 44 12 A SOLENOID SHORTED TO gROUND
 13 B SOLENOID SHORTED TO gROUND
 14 C SOLENOID SHORTED TO gROUND
 15 D SOLENOID SHORTED TO gROUND
 16 E SOLENOID SHORTED TO gROUND
 21 F SOLENOID SHORTED TO gROUND
 22 g SOLENOID SHORTED TO gROUND
 23 H SOLENOID SHORTED TO gROUND
 24 J SOLENOID SHORTED TO gROUND
 26 N SOLENOID SHORTED TO gROUND
  45 12 A SOLENOID CIRCUIT OPEN 13 B SOLENOID CIRCUIT OPEN 14 C SOLENOID CIRCUIT OPEN 15 D SOLENOID CIRCUIT OPEN 16 E SOLENOID CIRCUIT OPEN 21 F SOLENOID CIRCUIT OPEN 22 g SOLENOID CIRCUIT OPEN 23 H SOLENOID CIRCUIT OPEN
24 J SOLENOID CIRCUIT OPEN 26 N SOLENOID CIRCUIT OPEN
          it's the transmission that makes the truckTM
 DIAgNOSTIC TRANSMISSION MAIN CODES 34–45
DIAgNOSTIC TRANSMISSION MAIN CODES 13–34

 Diagnostic Transmission Codes Diagnostic Transmission Codes
  MAIN SUB CODE
CODE CODE DESCRIPTION
46 21 F SOLENOID CIRCUIT OvERCURRENT
 26 N & H SOLENOID CIRCUIT OvERCURRENT
 27 A-HI SOLENOID CIRCUIT OvERCURRENT
  51 01 OFFgOINg RATIO TEST, LOW TO 1 10 OFFgOINg RATIO TEST, 1 TO LOW
12 OFFgOINg RATIO TEST, 1 TO 2 21 OFFgOINg RATIO TEST, 2 TO 1 23 OFFgOINg RATIO TEST, 2 TO 3 24 OFFgOINg RATIO TEST, 2 TO 4 35 OFFgOINg RATIO TEST, 3 TO 5 42 OFFgOINg RATIO TEST, 4 TO 2 43 OFFgOINg RATIO TEST, 4 TO 3 45 OFFgOINg RATIO TEST, 4 TO 5 46 OFFgOINg RATIO TEST, 4 TO 6 53 OFFgOINg RATIO TEST, 5 TO 3 64 OFFgOINg RATIO TEST, 6 TO 4 65 OFFgOINg RATIO TEST, 6 TO 5 Xy OFFgOINg RATIO TEST, X TO y
              52 01 OFFgOINg C3PS TEST, LOW TO 1
 08 OFFgOINg C3PS TEST, LOW TO N1
 32 OFFgOINg C3PS TEST, 3 TO 2
 34 OFFgOINg C3PS TEST, 3 TO 4
 54 OFFgOINg C3PS TEST, 5 TO 4
 56 OFFgOINg C3PS TEST, 5 TO 6
 71 OFFgOINg C3PS TEST, REvERSE TO 1
 72 OFFgOINg C3PS TEST, REvERSE TO 2
 78 OFFgOINg C3PS TEST, REvERSE TO N1
 99 OFFgOINg C3PS TEST, N3 TO N2
 Xy OFFgOINg C3PS TEST, X TO y
  53 08 OFFgOINg SPEED TEST, LOW TO N1 09 OFFgOINg SPEED TEST, L TO NNC 18 OFFgOINg SPEED TEST, 1 TO N1
19 OFFgOINg SPEED TEST, 1 TO RELS 28 OFFgOINg SPEED TEST, 2 TO N1 29 OFFgOINg SPEED TEST, 2 TO N2 38 OFFgOINg SPEED TEST, 3 TO N1 39 OFFgOINg SPEED TEST, 3 TO N3
        MAIN SUB CODE
CODE CODE DESCRIPTION
53 48 OFFgOINg SPEED TEST, 4 TO N1
 49 OFFgOINg SPEED TEST, 4 TO N3
 58 OFFgOINg SPEED TEST, 5 TO N1
 59 OFFgOINg SPEED TEST, 5 TO N3
 68 OFFgOINg SPEED TEST, 6 TO N1
 69 OFFgOINg SPEED TEST, 6 TO N4
 78 OFFgOINg SPEED TEST, REvERSE TO N1
 99 OFFgOINg SPEED TEST, N2 TO N3 OR N3 TO N2
 Xy OFFgOINg SPEED TEST, X TO y
 54 01 ONCOMINg RATIO TEST, LOW TO 1
 07 ONCOMINg RATIO TEST, LOW TO REvERSE
 10 ONCOMINg RATIO TEST, 1 TO LOW
 12 ONCOMINg RATIO TEST, 1 TO 2
 17 ONCOMINg RATIO TEST, 1 TO REvERSE
 21 ONCOMINg RATIO TEST, 2 TO 1
 23 ONCOMINg RATIO TEST, 2 TO 3
 24 ONCOMINg RATIO TEST, 2 TO 4
 27 ONCOMINg RATIO TEST, 2 TO REvERSE
 32 ONCOMINg RATIO TEST, 3 TO 2
 34 ONCOMINg RATIO TEST, 3 TO 4
 35 ONCOMINg RATIO TEST, 3 TO 5
 42 ONCOMINg RATIO TEST, 4 TO 2
 43 ONCOMINg RATIO TEST, 4 TO 3
 45 ONCOMINg RATIO TEST, 4 TO 5
 46 ONCOMINg RATIO TEST, 4 TO 6
 53 ONCOMINg RATIO TEST, 5 TO 3
 54 ONCOMINg RATIO TEST, 5 TO 4
 56 ONCOMINg RATIO TEST, 5 TO 6
 64 ONCOMINg RATIO TEST, 6 TO 4
 65 ONCOMINg RATIO TEST, 6 TO 5
 70 ONCOMINg RATIO TEST, REv. TO LOW
 71 ONCOMINg RATIO TEST, REvERSE TO 1
 72 ONCOMINg RATIO TEST, REvERSE TO 2
 80 ONCOMINg RATIO TEST, N1 TO LOW
 81 ONCOMINg RATIO TEST, N1 TO 1
 82 ONCOMINg RATIO TEST, N1 TO 2
 83 ONCOMINg RATIO TEST, N1 TO 3
  it's the transmission that makes the truckTM
 DIAgNOSTIC TRANSMISSION MAIN CODES 53–54
DIAgNOSTIC TRANSMISSION MAIN CODES 46–53

 Diagnostic Transmission Codes Diagnostic Transmission Codes
  MAIN SUB CODE
CODE CODE DESCRIPTION
54 85 ONCOMINg RATIO TEST, N1 TO 5
 86 ONCOMINg RATIO TEST, N1 TO 6
 87 ONCOMINg RATIO TEST, N1 TO REvERSE
 92 ONCOMINg RATIO TEST, N2 TO 2
 93 ONCOMINg RATIO TEST, N3 TO 3
 95 ONCOMINg RATIO TEST, N3 TO 5
 96 ONCOMINg RATIO TEST, N4 TO 6
 Xy ONCOMINg RATIO TEST, X TO y
  55 07 ONCOMINg C3PS TEST, LOW TO REvERSE 17 ONCOMINg C3PS TEST, 1 TO REvERSE 27 ONCOMINg C3PS TEST, 2 TO REvERSE 87 ONCOMINg C3PS TEST, N1 TO REvERSE 97 ONCOMINg C3PS TEST, NvL TO REvERSE Xy ONCOMINg C3PS TEST, X TO y
      56 00 LOW RANgE vERIFICATION TEST
 11 1ST RANgE vERIFICATION TEST
 22 2ND RANgE vERIFICATION TEST
 33 3RD RANgE vERIFICATION TEST
 44 4TH RANgE vERIFICATION TEST
 55 5TH RANgE vERIFICATION TEST
 66 6TH RANgE vERIFICATION TEST
 77 REvERSE RANgE vERIFICATION TEST
  57 11 1ST RANgE vERIFICATION C3PS TEST
22 2ND RANgE vERIFICATION C3PS TEST
44 4TH RANgE vERIFICATION C3PS TEST
66 6TH RANgE vERIFICATION C3PS TEST
88 N1 RANgE vERIFICATION C3PS TEST
99 N2 OR N4 RANgE vERIFICATION C3PS TEST
      61 00 RETARDER OIL TEMPERATURE, HOT
  62 12 RETARDER TEMP. SENSOR, FAILED LOW
23 RETARDER TEMP. SENSOR, FAILED HIgH
32 ENgINE COOLANT TEMP. SENSOR, FAILED LOW 33 ENgINE COOLANT TEMP. SENSOR, FAILED HIgH
    63 00 INPUT FUNCTION FAULT
 26 kICkDOWN INPUT, FAILED ON
 40 SERvICE BRAkE STATUS INPUT, FAILED ON
  MAIN SUB CODE
CODE CODE DESCRIPTION
63 41 PUMP/PACk AND NEUTRAL gENERAL PURPOSE INPUT
 47 RELS INPUT, FAILED ON
  64 12 RETARDER MODULATION SENSOR, FAILED LOW 23 RETARDER MODULATION SENSOR, FAILED HIgH
  65 00 ENgINE RATINg TOO HIgH
 11 ENgINE NOT RESPONDINg TO LRTP TORQUE REDUCTION
 12 ENgINE NOT RESPONDINg TO DEFAULT TRANSMISSION TORQUE LIMIT
  66 00 SERIAL COMMUNICATION INTERFACE FAULT 11 S. C. I. ENgINE COOLANT SOURCE FAULT
22 J1939 RETARDER REQUEST FAULT
33 J1939 DRIvER DEMAND TORQUE FAULT
34 ENgINE NOT RESPONDINg TO J1939 SEM CONTROL
    69 27 A-HIgH SWITCH INOPERATIvE IN ECU
 28 F-HIgH SWITCH INOPERATIvE IN ECU
 29 N & H-HIgH SWITCH INOPERATIvE IN ECU
 33 COMPUTER OPERATINg PROPERLy TIMEOUT IN ECU
 34 ECU WRITE TIMEOUT
 35 ECU CHECkSUM TEST
 36 RAM SELF TEST IN ECU
 39 COMMUNICATION CHIP ADDRESSINg ERROR
 41 I/O ASIC ADDRESSINg TEST IN ECU
 42 SPI OUTPUT FAILURE
 43 SPI INPUT FAILURE
  70 12 MINOR LOOP OvERRUN IN SOFTWARE 13 ILLEgAL WRITE TO ADDRESS $0000 14 MAJOR LOOP OvERRUN IN SOFTWARE
  it's the transmission that makes the truckTM
 DIAgNOSTIC TRANSMISSION MAIN CODES 63–70
DIAgNOSTIC TRANSMISSION MAIN CODES 54–63

 Diagnostic Transmission Codes Diagnostic Transmission Codes
  DIAgNOSTIC CODE
CODE DESCRIPTION
C1312 RETARDER REQUEST SENSOR, FAILED LOW
 C1313 RETARDER REQUEST SENSOR, FAILED HIgH
  P0122 PEDAL POSITION SENSOR, LOW vOLTAgE
P0123 PEDAL POSITION SENSOR, HIgH vOLTAgE
  P0218 TRANSMISSION FLUID OvER TEMPERATURE
 P0602 TCM NOT PROgRAMMED
 P0610 TCM vEHICLE OPTIONS (TRANSID) ERROR
 P0613 TCM PROCESSOR
 P0614 TORQUE CONTROL DATA MISMATCH—ECM/TCM
 P0634 TCM INTERNAL TEMPERATURE TOO HIgH
 P063E AUTO CONFIgURATION THROTTLE INPUT NOT PRESENT
 P063F AUTO CONFIgURATION ENgINE COOLANT TEMP INPUT NOT PRESENT
 P0658 ACTUATOR SUPPLy vOLTAgE 1 (HSD1), LOW
 P0659 ACTUATOR SUPPLy vOLTAgE 1 (HSD1), HIgH
 P0701 TRANSMISSION CONTROL SySTEM PERFORMANCE
 P0702 TRANSMISSION CONTROL SySTEM ELECTRICAL (TRANSID)
 P0703 BRAkE SWITCH CIRCUIT MALFUNCTION
 P0708 TRANSMISSION RANgE SENSOR, HIgH
 P070C TRANSMISSION FLUID LEvEL SENSOR, LOW
 P070D TRANSMISSION FLUID LEvEL SENSOR, HIgH
 P0711 TRANSMISSION FLUID TEMPERATURE SENSOR PERFORMANCE
 P0712 TRANSMISSION FLUID TEMPERATURE SENSOR, LOW
 P0713 TRANSMISSION FLUID TEMPERATURE SENSOR, HIgH
 P0716 TURBINE SPEED SENSOR PERFORMANCE
 P0717 TURBINE SPEED SENSOR, NO SIgNAL
 P0719 BRAkE SWITCH ABS, INPUT LOW
 P071A RELS INPUT, FAILED ON
 P071D gENERAL PURPOSE FAULT
 P0721 OUTPUT SPEED SENSOR PERFORMANCE
 P0722 OUTPUT SPEED SENSOR, NO SIgNAL
 P0726 ENgINE SPEED SENSOR PERFORMANCE
 P0727 ENgINE SPEED SENSOR, NO SIgNAL
  DIAgNOSTIC CODE
CODE DESCRIPTION
P0729 INCORRECT 6TH gEAR RATIO
 P0731 INCORRECT 1ST gEAR RATIO
 P0732 INCORRECT 2ND gEAR RATIO
 P0733 INCORRECT 3RD gEAR RATIO
 P0734 INCORRECT 4TH gEAR RATIO
 P0735 INCORRECT 5TH gEAR RATIO
 P0736 INCORRECT REvERSE gEAR RATIO
 P0741 TORQUE CONvERTER CLUTCH SySTEM, STUCk OFF
 P0776 PRESSURE CONTROL SOLENOID 2, STUCk OFF
 P0777 PRESSURE CONTROL SOLENOID 2, STUCk ON
 P0796 PRESSURE CONTROL SOLENOID 3, STUCk OFF
 P0797 PRESSURE CONTROL SOLENOID 3, STUCk ON
  P0842 TRANSMISSION PRESSURE SWITCH 1, LOW
P0843 TRANSMISSION PRESSURE SWITCH 1, HIgH
P0880 TCM POWER INPUT SIgNAL
P0881 TCM POWER INPUT SIgNAL PERFORMANCE
P0882 TCM POWER INPUT SIgNAL, LOW
P0883 TCM POWER INPUT SIgNAL, HIgH
P0894 TRANSMISSION COMPONENT SLIPPINg
      P0960 PRESSURE CONTROL SOLENOID MAIN MOD CONTROL, OPEN
 P0962 PRESSURE CONTROL SOLENOID MAIN MOD CONTROL, LOW
 P0963 PRESSURE CONTROL SOLENOID MAIN MOD CONTROL, HIgH
 P0964 PRESSURE CONTROL SOLENOID 2 CONTROL, OPEN
 P0966 PRESSURE CONTROL SOLENOID 2 CONTROL, LOW
 P0967 PRESSURE CONTROL SOLENOID 2 CONTROL, HIgH
 P0968 PRESSURE CONTROL SOLENOID 3 CONTROL, OPEN
 P0970 PRESSURE CONTROL SOLENOID 3 CONTROL, LOW
 P0971 PRESSURE CONTROL SOLENOID 3 CONTROL, HIgH
 P0973 SHIFT SOLENOID 1 CONTROL, LOW
 P0974 SHIFT SOLENOID 1 CONTROL, HIgH
 P0975 SHIFT SOLENOID 2 CONTROL, OPEN
 P0976 SHIFT SOLENOID 2 CONTROL, LOW
  it's the transmission that makes the truckTM
 DIAgNOSTIC TRANSMISSION CODES P0729–P0976
DIAgNOSTIC TRANSMISSION CODES C1312–P0727

 Diagnostic Transmission Codes Diagnostic Transmission Codes
  DIAgNOSTIC CODE
CODE DESCRIPTION
P0977 SHIFT SOLENOID 2 CONTROL, HIgH
 P0989 RETARDER PRESSURE SENSOR, FAILED LOW
 P0990 RETARDER PRESSURE SENSOR, FAILED HIgH
  P1739 INCORRECT LOW gEAR RATIO
 P1891 THROTTLE POSITION SENSOR PWM SIgNAL, LOW
 P1892 THROTTLE POSITION SENSOR PWM SIgNAL, HIgH
 P2184 ENgINE COOLANT TEMPERATURE SENSOR, LOW
 P2185 ENgINE COOLANT TEMPERATURE SENSOR, HIgH
 P2637 TORQUE MANAgEMENT FEEDBACk SIgNAL (SEM)
 P2641 TORQUE MANAgEMENT FEEDBACk SIgNAL (LRTP)
 P2670 ACTUATOR SUPPLy vOLTAgE 2 (HSD2), LOW
 P2671 ACTUATOR SUPPLy vOLTAgE 2 (HSD2), HIgH
 P2685 ACTUATOR SUPPLy vOLTAgE 3 (HSD3), LOW
 P2686 ACTUATOR SUPPLy vOLTAgE 3 (HSD3), HIgH
  P2714 P2715 P2718 P2720 P2721 P2723 P2724 P2727 P2729 P2730 P2736 P2738 P2739 P2740 P2742 P2743 P2761 P2763 P2764 P278A P2793
PRESSURE CONTROL SOLENOID 4, STUCk OFF PRESSURE CONTROL SOLENOID 4, STUCk ON PRESSURE CONTROL SOLENOID 4 CONTROL, OPEN PRESSURE CONTROL SOLENOID 4 CONTROL, LOW PRESSURE CONTROL SOLENOID 4 CONTROL, HIgH PRESSURE CONTROL SOLENOID 1, STUCk OFF PRESSURE CONTROL SOLENOID 1, STUCk ON PRESSURE CONTROL SOLENOID 1 CONTROL, OPEN PRESSURE CONTROL SOLENOID 1 CONTROL, LOW PRESSURE CONTROL SOLENOID 1 CONTROL, HIgH PRESSURE CONTROL SOLENOID 5 CONTROL, OPEN PRESSURE CONTROL SOLENOID 5 CONTROL, LOW PRESSURE CONTROL SOLENOID 5 CONTROL, HIgH RETARDER OIL TEMPERATURE, HOT
RETARDER OIL TEMPERATURE SENSOR, LOW RETARDER OIL TEMPERATURE SENSOR, HIgH TCC PCS CONTROL, OPEN
TCC PCS CONTROL, HIgH
TCC PCS CONTROL, LOW kICkDOWN INPUT, FAILED ON gEAR SHIFT DIRECTION
                      DIAgNOSTIC CODE
CODE DESCRIPTION
P2808 PRESSURE CONTROL SOLENOID 6, STUCk OFF
 P2809 PRESSURE CONTROL SOLENOID 6, STUCk ON
 P2812 PRESSURE CONTROL SOLENOID 6 CONTROL, OPEN
 P2814 PRESSURE CONTROL SOLENOID 6 CONTROL, LOW
 P2815 PRESSURE CONTROL SOLENOID 6 CONTROL, HIgH
  U0001 HIgH SPEED CAN BUS RESET COUNTER OvERRUN (IESCAN)
U0010 CAN BUS RESET COUNTER OvERRUN
  U0100 LOST COMMUNICATION WITH ECM/PCM (J1587)
 U0103 LOST COMMUNICATION WITH gEAR SHIFT MODULE (SHIFT SELECTOR) 1
 U0115 LOST COMMUNICATION WITH ECM
  U0291 LOST COMMUNICATION WITH gEAR SHIFT MODULE (SHIFT SELECTOR) 2
 U0304 INCOMPATIBLE gEAR SHIFT MODULE 1 (SHIFT SELECTOR ID)
 U0333 INCOMPATIBLE gEAR SHIFT MODULE 2 (SHIFT SELECTOR ID)
  U0404 INvALID DATA RECEIvED FROM gEAR SHIFT MODULE (SHIFT SELECTOR) 1
 U0592 INvALID DATA RECEIvED FROM gEAR SHIFT MODULE (SHIFT SELECTOR) 2
  it's the transmission that makes the truckTM
 DIAgNOSTIC TRANSMISSION CODES P2808–U0592
DIAgNOSTIC TRANSMISSION CODES P0977–P2793

Good info Scott, when I get home I will print it and put in my binder incase of no internet when a problem occurs.

Print the one from the link. Its got pictures

Here is a link to the Allison TS2973EN troubleshooting manual for the WTECIII ECM (which is what my 1998 vintage coach has) Just save it to a file on your hard drive or you could even take the PDF file to Staples or office max and have a printed laminated manual made (I did that for the Aqua Hot)

Allison TS2973EN manual (https://drive.google.com/file/d/1Vw8JXxz2amkfjtXyQw5DJXc_9D_QK0FO/view)

You need to verify which WTEC system you have as I found out today that the codes vary a bit. On the WTECII manual I downloaded. My fault code says "retarder not inhibited"  And after discovering the correct manual today for the WTECIII (linked above)  My code DOES inhibit retarder operation.

Jerry that is 443 pages. Very nice but I was just looking for how to use the control pad. See post 5.
https://cdn.mpparts.com/pdfs/Trans%20Codes.pdf
But I certinally will keep the link just in case. Thanks Scott

That's why I posted that link. Just in case someone might need it. But even though it's 443 pages. It's only 5.5MB to download it to your hard drive. Very, very small memory cost for modern computers/cell phones. And the full TS manual also tells one what the codes will & will not allow the transmission to do.

New one for me, 

If I start the coaches engine with the retarder switch ON transmission throws this code 64 12 retarder modulation sensor, failed low and  disables retarder until I clear the code.  Also I THINK  this is new when I start and the retarder switch is on the light will flash like the retarder is being activated.

No issue with retarder if starting with switch in off position, works as it should.