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INSPECTION PROCEDURE 2: Shifting the Drive Mode Selector Does not Change the Mode.
 
 
 
 
COMMENTS ON TROUBLE SYMPTOM
  • If the drive mode cannot be switched by pushing the drive mode selector, the drive mode selector, the wiring harness wires between the AWC-ECU and the drive mode selector, the wiring harness wire in the ground circuit for the drive mode selector, the AWC-ECU or the combination meter may have a problem.
 
 
PROBABLE CAUSES
  • Damaged wiring harness and connectors
  • Malfunction of drive mode selector
  • AWC-ECU malfunction
  • Malfunction of combination meter
 
 
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool (M.U.T.-III) data list.
Check the following data list. (Refer to ).
  • Item 1: AWC control mode
Is the check result normal?
Go to Step 4.
Go to Step 2.
 
STEP 2. Follow combination meter trouble symptom procedure 9 "The combination meter light does not illuminate normally or the multi-information display is not displayed normally."
Refer to GROUP 54A - Combination Meter .
Is the check result normal?
Go to Step 4.
Repair it. Then go to Step 3.
 
STEP 3. Retest the system.
Does the malfunction occur again?
Go to Step 4.
This diagnosis is complete.
 
STEP 4. Resistance measurement between the drive mode selector connector terminals
(1) Remove the drive mode selector (Refer to GROUP 27C - Drive mode selector ).
(2) Measure the resistance between the terminals (Refer to GROUP 27C - Drive mode selector Inspection ).
Is the check result normal?
Go to Step 5.
Replace the drive mode selector (Refer to GROUP 27C - Drive mode selector ). Then go to Step 7.
 
STEP 5. Wiring harness check
(1) Check the wiring harness between the AWC-ECU connector (terminal SW-1) and the drive mode selector connector.
(2) Check the connector(s) or terminal(s) or wiring harness above for damage or other problem.
Is the check result normal?
Go to Step 6.
Repair the connector(s) or terminal(s) or wiring harness.Then go to Step 7.
 
STEP 6. Resistance measurement at the drive mode selector connector
(1) Disconnect the drive mode selector connector.
(2) Measure the resistance between the drive mode selector wiring harness side connector and the body ground.
OK: Continuity exists (2 Ω or less)
Is the check result normal?
Go to Step 7.
Repair the connector(s) or terminal(s) or wiring harness.Then go to Step 7.
 
STEP 7. Retest the system.
Does the malfunction occur again?
Replace AWC-ECU (Refer to ).
This diagnosis is complete.