54Da-Modes cannot be switched by using the SAVE/CHARGE mode switch

INSPECTION PROCEDURE 18: Modes display cannot be switched by using the SAVE/CHARGE mode switch

COMMENTS ON TROUBLE SYMPTOM

If the modes cannot be switched by operating the SAVE/CHARGE mode switch, the SAVE/CHARGE mode switch or the PHEV-ECU is suspected.

PROBABLE CAUSES

DIAGNOSIS

Required Special Tools

STEP 1. Check SAVE/CHARGE mode switch

Refer to GROUP 22A - Selector Lever

Is the check result normal?

Go to Step 2

Replace the Shift indicator panel assembly (Refer to GROUP 22A - Selector Lever

STEP 2. Check the ground line for open circuit (SAVE/CHARGE mode switch and body ground).

(1) Disconnect the SAVE/CHARGE mode switch connector.

(2) Take the measurements below at the SAVE/CHARGE mode switch wiring harness side connector.

Continuity SW1- terminal between SAVE/CHARGE mode switch wiring harness side connector and body ground.

OK: Continuity (less than 2 Ω)

Is the check result normal?

Go to Step 3

Repair the connector or wiring harness.

STEP 3. Check the signal line for open and short circuit (PHEV-ECU and the SAVE/CHARGE mode switch).

(1) Take the measurements below at the SAVE/CHARGE mode switch wiring harness side connector.

Continuity SVCH terminal between PHEV-ECU wiring harness side connector and body ground.

OK: No continuity

Continuity SVCH terminal between PHEV-ECU wiring harness side connector and SAVE/CHARGE mode switch wiring harness side connector.

OK: Continuity (less than 2 Ω)

Is the check result normal?

Go to Step 4

Repair the connector or wiring harness.

STEP 4. Using scan tool (M.U.T.-IIISE), check the data list. <PHEV-ECU>

Check the input signals from the SAVE/CHARGE mode switch.

Item No.	Item name	Normal condition
112	SAVE mode / CHARGE mode switch	OFF to ON (only when switch is operated)

OK: Normal condition is displayed.

Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction

Replace the PHEV-ECU (Refer to