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i-SHIFT System Symptom Troubleshooting

When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.
Symptom
Diagnostic procedure
HDS does not communicate with the TCM or the vehicle
i-SHIFT indicator does not come on
1.
2.
Check the i-SHIFT INDICATOR LIGHT F-CAN in the DATA LIST with the HDS. If it is NG, replace the TCM.
i-SHIFT indicator stays on, but no DTCs are stored
i-SHIFT position indicator does not come on
1.
2.
Substitute a known-good TCM, then recheck. If it is OK, replace the original TCM.
i-SHIFT position indicator does not change or a gear position does not match
1.
2.
Move the shift lever to all position then check the SHIFT VALID N or D or A/M or + or − or R FROM SHIFTER in the DATA LIST with the HDS. If it is NG, replace the gear shift control module.
Paddle shifter + (upshift switch) does not gear change
1.
2.
3.
Substitute a known-good TCM, then recheck. If it is OK, replace the original TCM.
Paddle shifter − (downshift switch) does not gear change
1.
2.
3.
Substitute a known-good TCM, then recheck. If it is OK, replace the original TCM.
Manual mode does not gear change of gear shift control module
Move the shift lever to all positions then check the SHIFT VALID N or D or A/M or + or − or R FROM SHIFTER in the DATA LIST with the HDS. If it is NG, replace the gear shift control module.
Engine doesn't crank
No transmission power to wheels
Non-creep
Engine stalls when stopping
All segments of the gear position indicator turn on. (When starting the engine, N is not indicated on the gear position indicator although the shift lever is at N position)
1.
2.
3.
Make sure the shift lever is at N position, press the brake pedal and keep it pressed.
Turn the ignition switch to ON (II).
Keep the brake pedal pressed until the gear position indicator indicates N. If the gear position indicator does not change to N, inspect the battery.