Diagnosis Procedure

ECM supplies a voltage of 5 V to some of the sensors systematically divided into 3 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor.

1. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-1 
   1. Turn ignition switch OFF.
   2. Disconnect accelerator pedal position (APP) sensor 2 harness connector.
   3. Turn ignition switch ON.
   4. Check the voltage between APP sensor 2 harness connector and ground.
      Without ICC
      
      

      +		-	Voltage (Approx.)
      APP sensor 2
      Connector	Terminal
      E110	1	Ground	5 V

      With ICC
      
      

      +		-	Voltage (Approx.)
      APP sensor 2
      Connector	Terminal
      E213	10	Ground	5 V

   Is the inspection result normal?

   YES

   INSPECTION END

   NO

   GO TO 2.

2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT-2 
   1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Check the continuity between APP sensor 2 harness connector and ECM harness connector.
      Without ICC
      
      

      +		-		Continuity
      APP sensor 2		ECM
      Connector	Terminal	Connector	Terminal
      E110	1	E20	142	Existed

      With ICC
      
      

      +		-		Continuity
      APP sensor 2		ECM
      Connector	Terminal	Connector	Terminal
      E213	10	E20	142	Existed

   Is the inspection result normal?

   YES

   GO TO 3.

   NO

   Repair open circuit.

3. CHECK SENSOR POWER SUPPLY 2 CIRCUIT 
   1. Disconnect following sensors harness connector.
   2. Check harness for short to power and short to ground, between the following terminals.

   ECM		Sensor
   Connector	Terminal	Name	Connector	Terminal
   E20	142	APP sensor 2 (Without ICC)	E110	1
   		APP sensor 2 (With ICC)	E213	10
   F91	30	Battery current sensor	E63	2
   		Multi-way control valve	F20	5
   		Electrically-controlled cooling fan coupling	F39	2
   F92	73	Camshaft position sensor (Bank 2)	F83	1
   		Exhaust valve timing control position sensor (Bank 2)	F17	1

   Is the inspection result normal?

   YES

   GO TO 4.

   NO

   Repair short to ground or short to power in harness or connectors.

4. CHECK COMPONENTS 

   Check the following.

   • APP sensor 2 (Refer to Component Inspection .)
   • Battery current sensor. (Refer to Component Inspection .)
   • Multi-way control valve. (Refer to Component Inspection .)
   • Electrically-controlled cooling fan coupling (Refer to Component Inspection .)
   • Camshaft position sensor (Bank 2) (Refer to Component Inspection .)
   • Exhaust valve timing control position sensor (Bank 2). (Refer to Component Inspection .)

   Is the inspection result normal?

   YES

   Refer to Inspection .

   NO

   Replace malfunctioning component.