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.

With CONSULT

1. Turn ignition switch ON.
2. On CONSULT screen, select "ENGINE">>"Data Monitor">>"MAIN SW", "CANCEL SW", "RESUME/ACC SW" and "SET SW".
3. Check each item indication under the following conditions.

   Monitor item	Condition		Indication
   MAIN SW	MAIN switch	Pressed	ON
   		Released	OFF
   CANCEL SW	CANCEL switch	Pressed	ON
   		Released	OFF
   RESUME/ACC SW	ACCEL/RES switch	Pressed	ON
   		Released	OFF
   SET SW	COAST/SET switch	Pressed	ON
   		Released	OFF

Without CONSULT

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 (ASCD steering switch signal)	187	MAIN switch: Pressed	0 V
   			CANCEL switch: Pressed	1 V
   			COAST/SET switch: Pressed	2 V
   			ACCEL/RES switch: Pressed	3 V
   			All ASCD steering switches: Released	4 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 (spiral cable) harness connector.
4. Check the continuity between combination switch harness 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.

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace error-detected parts.

1. Check the continuity between combination switch (spiral cable) harness connector 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 ASCD steering switch. Refer to Removal and Installation .