sensor NISSAN PICK-UP 2001 Repair Manual

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.
SEF278ZB
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 23 and ground under the following conditions.
SEF279ZB
OK or NG
OKcGO TO 2.
NGcGO TO 3.
DTC 0403 ACCEL POS SENSORYD25DDTi
EC-3522

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
OKcGO TO 24.
NGcGO TO 15.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3523

3 CHECK ACCELERATOR POSITION SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect accelerator work unit harness connector.
SEC233D
3. Turn ignition switch ªONº.
4. Check voltage between accelerator work unit terminal 1 and ground with CONSULT-II or tester.
SEC244D
OK or NG
OKcGO TO 5.
NGcGO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F54, M48 (RHD models)
+Harness for open or short between ECM and accelerator work unit
cRepair harness or connectors.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3524

5 CHECK ACCELERATOR POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screw.
SEC245D
3. Check harness continuity between accelerator work unit 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 F54, M48 (RHD models)
+Harness for open or short between ECM and accelerator work unit
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 work unit terminal 2. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK (With CONSULT-II)cGO TO 9.
OK (Without CONSULT-II)cGO TO 10.
NGcGO TO 8.
8 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F55, M47 (RHD models)
+Harness for open or short between ECM and accelerator work unit
cRepair open circuit or short to ground or short to power in harness or connectors.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3525

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.
SEF818YB
OK or NG
OK (LHD models)cGO TO 13.
OK (RHD models)cGO 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.
SEF407YB
OK or NG
OK (LHD models)cGO TO 14.
OK (RHD models)cGO TO 11.
NGcReplace accelerator pedal assembly.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3526

11 CHECK ACCELERATOR POSITION SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between harness connector F55 terminal 13 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK (With CONSULT-II)cGO TO 13.
OK (Without CONSULT-II)cGO TO 14.
NGcGO TO 12.
12 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M47, F55
+Harness for open or short between harness connector F55 and engine ground
cRepair harness or connectors.
13 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 24.
14 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 24.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3527

15 CHECK ACCELERATOR POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect accelerator work unit harness connector.
SEC233D
3. Turn ignition switch ªONº.
4. Check voltage between accelerator position switch terminal 5 and ground with CONSULT-II or tester.
SEC243D
OK or NG
OKcGO TO 17.
NGcGO TO 16.
16 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+Harness connectors M47, F55 (RHD models)
+Harness for open or short between accelerator work unit and ECM relay
+Harness for open or short between accelerator work unit and ECM
cRepair harness or connectors.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3528

17 CHECK ACCELERATOR POSITION SWITCH INPUT SIGNAL CIRCUIT-I FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between accelerator work unit terminal 6 and ECM terminal 31. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 19.
NGcGO TO 18.
18 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M47, F55 (RHD models)
+Harness for open or short between ECM and accelerator work unit
cRepair open circuit or short to ground or short to power in harness or connectors.
19 CHECK ACCELERATOR POSITION SWITCH INPUT SIGNAL CIRCUIT-II FOR OPEN AND SHORT
1. Check harness continuity between accelerator work unit terminal 4 and ECM terminal 32. Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 21.
NGcGO TO 20.
20 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M47, F55 (RHD models)
+Harness for open or short between ECM and accelerator work unit
cRepair open circuit or short to ground or short to power in harness or connectors.
21 CHECK ACCELERATOR POSITION SWITCH
Check continuity between accelerator work unit terminals 4 and 5, 5 and 6 under the following conditions.
SEC246D
OK or NG
OK (With CONSULT-II)cGO TO 22.
OK (Without CONSULT-II)cGO TO 23.
NGcReplace accelerator pedal assembly.
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3529

22 RESET ACCELERATOR POSITION SENSOR IDLE POSITION MEMORY
With CONSULT-II
1. Reconnect all connectors disconnected.
2. Turn ignition switch ªONº.
3. Select ªOFF ACCEL PO SIGº in ªACTIVE TESTº mode with CONSULT-II.
4. Touch ªCLEARº.
cGO TO 24.
23 RESET ACCELERATOR POSITION SENSOR IDLE POSITION MEMORY
Without CONSULT-II
1. Reconnect all connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Let engine idle for 10 minutes.
cGO TO 24.
24 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-3469.
cINSPECTION END
DTC 0403 ACCEL POS SENSORYD25DDTi
Diagnostic Procedure (Cont'd)
EC-3530

On Board Diagnosis Logic
Malfunction is detected when ... Check Items (Possible Cause)
+An excessively high voltage from the charge air pressure sen-
sor is sent to ECM when engine is running.+Intake air system
+Turbocharger system
+Charge air pressure sensor
+Harness or connectors
(The charge air pressure sensor circuit is shorted.)
DTC Confirmation Procedure
NOTE:
If DTC 0406 ªINT AIR VOLº displayed with DTC 0905
ªTURBO PRESSUREº, perform trouble diagnosis for DTC
0905 ªTURBO PRESSUREº first. (See EC-3601.)
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and warm it up to normal operating temperature.
4) Drive vehicle.
5) Maintain the engine speed more than 4,000 rpm for at least
10 seconds.
6) If DTC is detected, go to ªDiagnostic Procedureº, EC-3533.
WITHOUT CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Drive vehicle.
3) Maintain the engine speed more than 4,000 rpm for at least
10 seconds.
4) Stop vehicle.
5) Turn ignition switch ªOFFº, wait at least 5 seconds and then
turn ªONº.
6) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º
with ECM.
7) If DTC is detected, go to ªDiagnostic Procedureº, EC-3533.SEF817Y
DTC 0406 INT AIR VOLYD25DDTi
EC-3531