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i-SHIFT System Symptom Troubleshooting - Engine doesn't crank

Engine Doesn't Crank
  1. Turn the ignition switch to ON (II).
  1. Press the brake pedal, and change the shift lever to the N position.
  1. Check the MECHANICAL GEAR STACK FOR STARTER ENABLE in the DATA LIST with the HDS.
Is the starter enable signal OK?
YES -
NO -
Go to Step 4 .
  1. Check the FOOTBRAKE ON SIGNAL FOR STARTER ENABLE in the DATA LIST with the HDS.
Is the starter enable signal OK?
YES -
Go to Step 5 .
NO -
  1. Check the CLUTCH OPEN SIGNAL FOR STARTER ENABLE in the DATA LIST with the HDS.
Is the starter enable signal OK?
YES -
Go to Step 7 .
NO -
Go to Step 6 .
  1. Check the CLUTCH POSITION in the DATA LIST with the HDS.
Is there more 15 mm (0.6 in.)?
YES -
Check for these conditions, and repair if necessary:■
  • Clutch disc and pressure plate
  • Diaphragm spring
  • Release bearing
NO -
Check for these conditions, and repair if necessary:■
  • Slave cylinder
  • Release fork
  1. Check the NEUTRAL SHIFTER SIGNAL FOR STARTER ENABLE in the DATA LIST with the HDS.
Is the starter enable OK?
YES -
Go to Step 9 .
NO -
Go to Step 8 .
  1. Move the shift lever in N, then check the SHIFT VALID N FROM SHIFTER in the DATA LIST with the HDS.
It is OK?
YES -
Go to Step 9 .
NO -
  1. Check the ENGAGE GEAR NEUTRAL in the DATA LIST with the HDS.
Does the gear change into the N position?
YES -
Go to Step 11 .
NO -
Repair the transmission internal failure.■
  1. Try to start the engine.
Does the engine start?
YES -
Troubleshooting is complete.■
NO -
Substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM .