Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Repair or replace ground connection.

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

   ECM			Condition	Voltage (V)
   Connector	+	-
   	Terminal	Terminal
   M107	101 (ICC steering switch signal)	108	MAIN switch: Pressed	Approx. 0
   			DYNAMIC DRIVER ASSISTANCE switch: Pressed	Approx. 1.0
   			CANCEL switch: Pressed	Approx. 1.9
   			DISTANCE switch: Pressed	Approx. 2.6
   			SET/COAST switch: Pressed	Approx. 3.2
   			RESUME/ACCELERATE switch: Pressed	Approx. 3.7
   			All ICC steering switches: Released	Approx. 4.2

   Is the inspection result normal? 

   YES: GO TO  8.

   NO: GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect combination switch harness connector M303.
4. Check the continuity between combination switch and ECM harness connector.

   Combination switch		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   M303	16	M107	108	Existed

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

   Is the inspection result normal? 

   YES: GO TO  5.

   NO: GO TO 4.

Check the Following:

• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch

: Repair open circuit, short to ground or short to power in harness or connectors.

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

   Combination switch		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   M303	13	M107	101	Existed

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

   Is the inspection result normal? 

   YES: GO TO  7.

   NO: GO TO 6.

Check the Following:

• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch

: Repair open circuit, short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 8.

NO: Replace ICC steering switch. Refer to "REMOVAL AND INSTALLATION ".

Perform "INTERMITTENT INCIDENT ".

: INSPECTION END