Diagnosis Procedure

If DTC P1564 is displayed with DTC P0605, first perform the confirmation procedure for DTC P0605.

Is applicable DTC detected?

YES

Perform diagnosis of applicable. Refer to DTC Description .

NO

GO TO 2.

1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals under the following conditions.

   ECM			Condition	Voltage (V)
   Connector	+	-
   	Terminal
   E10	134	135	MAIN switch: Pressed	Approx. 0
   			CANCEL switch: Pressed	Approx. 1.18
   			DISTANCE switch: Pressed	Approx. 1.51
   			SET/- switch: Pressed	Approx. 2.00
   			RES/+ switch: Pressed	Approx. 2.71

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect combination switch harness connector M149.
4. Check the continuity between combination switch and ECM harness connector.

   Combination switch	ECM		Continuity
   Terminal	Connector	Terminal
   18	E10	135	Existed

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace error-detected parts.

1. Check the continuity between combination switch and ECM harness connector.

   Combination switch	ECM		Continuity
   Terminal	Connector	Terminal
   15	E10	134	Existed

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

Check ICC steering switch. Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace ICC steering switch. Refer to Component Parts Location .