Diagnosis Procedure

If DTC P1564 is displayed with DTC P0605, first perform the confirmation procedure (trouble diagnosis) for DTC P0605.

Is DTC P0605 detected?

YES

Perform diagnosis for P0605. Refer to DTC Description .

NO

GO TO 2.

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

   ECM			Condition	Voltage (Approx.)
   Connector	+	-
   	Terminal
   E32	186 (ICC steering switch signal)	187	MAIN switch: Pressed	0 V
   			DYNAMIC DRIVE ASSISTANCE switch: Pressed	1.1 V
   			CANCEL switch: Pressed	1.9 V
   			DISTANCE switch: Pressed	2.6 V
   			COAST/SET switch: Pressed	3.2 V
   			ACCEL/RES switch: Pressed	3.7 V
   			All ASCD steering switches: Released	4.2 V

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

   Combination switch		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   M30	32	E32	187	Existed

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

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
   Connector	Terminal	Connector	Terminal
   M30	25	E32	186	Existed

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

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

Check the continuity between combination switch (spiral cable) connector terminals.

Is the inspection result normal?

YES

GO TO 6.

NO

Replace spiral cable. Refer to Removal and Installation .

Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace ICC steering switch. Refer to Removal and Installation .