Diagnostic Procedures
Key on.
Observe gear display.
Note: An “88” may show up in the dash at key on. This indicates the Transmission Electronic Control Unit (TECU) has completed power-up. If the transmission and gear display power-up at the same time, you may not see an “88”.
If blank gear display, Go to Step B
If “-” (1 dash) on gear display, Go to Step D
If “--” (2 dashes) or “**” (2 stars) on gear display, Go to Step D
“#” (gear number) on gear display
- Verify shift lever or push button is in neutral.
- Turn key off and wait 2 minutes.
- Hold clutch half way to the floor. (If equipped)
- Turn key on.
- If problem continues, call 1-800-826-HELP (4357)
Fault Code F on gear display, Go to Step D
Neutral “N” on gear display, Go to Step B
Attempt to start engine
No engine crank, lever is in neutral and gear display is “N” (neutral). Start Enable Relay Contact Test
No engine crank, lever is in neutral and gear display is blank. See "Power-Up Sequence Test". If no problems found, refer to OEM for gear display problem.
No engine crank and lever is NOT in neutral.
- Verify shift lever or push button is in neutral.
- Turn key off and wait 2 minutes.
- Hold clutch half way to the floor. (If equipped)
- Turn key on.
- If problem continues, call 1-800-826-HELP (4357)
Engine cranks and gear display is blank. Refer to OEM for gear display problem.
Engine cranks and gear display is “N” (neutral), Go to Step C
Engage a gear.
Note: AutoShift will not engage a gear from neutral test. UltraShift will not engage a gear from neutral test. UltraShift PLUS Product will not engage a gear from neutral test, or UltraShift AW3 Clutch Engagement test depending on transmission type.
Unable to engage gear (ie. flashing gear display with down arrows, or solid “N”).
Solid “#” (gear number) but no drive. See "Front Box Control Test" Gear engaged and drives, Go to Step E
Check for active fault codes.
Note: If no problem found, refer to OEM for display problem.
If codes are present, See "Fault Code Isolation Procedure Index"
If no codes and gear display is “-” (1 dash)
- Verify shift lever or push button is in neutral.
- Turn key off. Wait 2 minutes.
- Hold clutch half way to the floor. (If equipped)
- Turn on key.
- If problem continues, call 1-800-826-HELP (4357)
If no codes and gear display is“--” (2 dashes) or “**” (2 stars), See "Power-Up Sequence Test"
Record and clear Inactive fault codes.
Drive vehicle and attempt to reset code.
If no codes are present, test complete.
If Inactive transmission component or Fault Codes, record codes an call 1-800-826-HELP (4357).
If active transmission component or Fault Codes, See "Fault Code Isolation Procedure Index"