2000 NISSAN PATROL Electronic Repair Manual

Wiring Diagram
TEC103M
DTC 0403 ACCEL POS SENSORZD30DDTi
EC-1128

TEC107M
DTC 0403 ACCEL POS SENSORZD30DDTi
Wiring Diagram (Cont'd)
EC-1129

Diagnostic Procedure
1 CHECK OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªACCEL POS SENº in ªDATA MONITORº mode with CONSULT-II.
3. Check ªACCEL POS SENº signal under the following conditions.
SEF278Z
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 23 and ground under the following conditions.
SEF279Z
OK or NG
OKcGO TO 2.
NGcGO TO 3.
DTC 0403 ACCEL POS SENSORZD30DDTi
EC-1130

2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªFULL ACCEL SWº and ªOFF ACCEL SWº in ªDATA MONITORº mode with CONSULT-II.
3. Check ªFULL ACCEL SWº and ªOFF ACCEL SWº signal under the following conditions.
SEF416Y
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminals 31, 32 and ground under the following conditions.
SEF417Y
OK or NG
OKcINSPECTION END
NGcGO TO 14.
DTC 0403 ACCEL POS SENSORZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1131

3 CHECK ACCELERATOR POSITION SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect accelerator position sensor harness connector.
SEF694V
3. Turn ignition switch ªONº.
4. Check voltage between accelerator position sensor terminal 1 and ground with CONSULT-II or tester.
SEF816Y
OK or NG
OKcGO TO 5.
NGcGO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F7, M52 (RHD models)
+Harness for open or short between ECM and accelerator position sensor
cRepair harness or connectors.
DTC 0403 ACCEL POS SENSORZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1132

5 CHECK ACCELERATOR POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screw.
SEF227Z
3. Check harness continuity between accelerator position sensor terminal 3 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 7.
NGcGO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F7, M52 (RHD models)
+Harness for open or short between ECM and accelerator position sensor
cRepair open circuit or short to ground or short to power in harness or connectors.
7 CHECK ACCELERATOR POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 23 and accelerator position sensor terminal 2. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 9.
NGcGO TO 8.
8 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F7, M52 (RHD models)
+Harness for open or short between ECM and accelerator position sensor
cRepair open circuit or short to ground or short to power in harness or connectors.
DTC 0403 ACCEL POS SENSORZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1133

9 CHECK ACCELERATOR POSITION SENSOR
With CONSULT-II
1. Reconnect all disconnected harness connectors.
2. Turn ignition switch ªONº.
3. Select ªDATA MONITORº mode with CONSULT-II.
4. Check the indication of ªACCEL POS SENº under the following conditions.
SEF818Y
OK or NG
OKcGO TO 11.
NGcReplace accelerator pedal assembly.
10 CHECK ACCELERATOR POSITION SENSOR
Without CONSULT-II
1. Reconnect all disconnected harness connectors.
2. Turn ignition switch ªONº.
3. Check voltage between ECM terminal 23 and ground under the following conditions.
SEF407Y
OK or NG
OKcGO TO 12.
NGcReplace accelerator pedal assembly.
11 RESET ACCELERATOR POSITION SENSOR IDLE POSITION MEMORY
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªOFF ACCEL PO SIGº in ªACTIVE TESTº mode with CONSULT-II.
3. Touch ªCLEARº.
cGO TO 13.
DTC 0403 ACCEL POS SENSORZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1134

12 RESET ACCELERATOR POSITION SENSOR IDLE POSITION MEMORY
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Let engine idle for 10 minutes.
cGO TO 13.
13 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-1076.
cINSPECTION END
14 CHECK ACCELERATOR POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect accelerator position switch harness connector.
SEF708V
3. Turn ignition switch ªONº.
4. Check voltage between accelerator position switch terminal 5 and ground with CONSULT-II or tester.
SEF346X
OK or NG
OKcGO TO 16.
NGcGO TO 15.
15 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M50, F5 (LHD models)
+Harness for open or short between accelerator position switch and ECM relay
+Harness for open or short between accelerator position switch and ECM
cRepair harness or connectors.
DTC 0403 ACCEL POS SENSORZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1135