Diagnosis Procedure
- CHECK APP SENSOR 1 POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect accelerator pedal position (APP) sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between APP sensor harness connector and ground.
+
-
Voltage
(Approx.)
APP sensor
Connector
Terminal
E31 *1
5
Ground
5 V
E74 *2
10
*1: Without ICC
*2: With ICC
Is the inspection result normal?
YES
INSPECTION END
NO
GO TO 2.
- CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between APP sensor harness connector and ECM harness connector.
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E31 *1
5
E32
198
Existed
E74 *2
10
*1: Without ICC
*2: With ICC
Is the inspection result normal?
YES
GO TO 3.
NO
Repair open circuit.
- CHECK SENSOR POWER SUPPLY 1 CIRCUIT
- Disconnect following sensors harness connector.
- Check harness for short to power and short to ground, between the following terminals.
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F78
34
Crankshaft position sensor
F11
1
35
Throttle position sensor
F50
5
36
Intake camshaft position sensor (bank 1)
F113
1
Exhaust camshaft position sensor (bank 1)
F114
1
37
Mass air flow sensor
E64
1
E32
198
APP sensor 1
E31 *1
5
E74 *2
10
*1: Without ICC
*2: With ICC
Is the inspection result normal?
YES
GO TO 4.
NO
Repair short to ground or short to power in harness or connectors.
- CHECK COMPONENTS
Check the following.
- Crankshaft position sensor (Refer to Component Inspection .)
- Throttle position sensor (Refer to Component Inspection (Throttle Position Sensor) .)
- Intake camshaft position sensor (bank 1) (Refer to Component Inspection .)
- Exhaust camshaft position sensor (bank 1) (Refer to Component Inspection .)
- Mass air flow sensor (Refer to Component Inspection (Mass Air Flow Sensor) .)
- APP sensor 1 (Refer to Component Inspection (Accelerator Pedal Position Sensor) .)
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning component.