2005 NISSAN NAVARA control unit

EC-184
DTC P0501 ASCD VEHICLE SPEED SENSOR
WITHOUT CONSULT-II
TESTING CONDITION:
Step 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
1. Start engine.
2. Drivethevehicleatmorethan10km/h(6MPH).
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
5. If DTC is detected, go toEC-184, "
Diagnostic Procedure".
Diagnostic ProcedureEBS01KHK
1.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Refer toBRC-8, "
TROUBLE DIAGNOSIS".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2.CHECK COMBINATION METER
Check combination meter function.
Refer toDI-4, "
COMBINATION METERS".
>>INSPECTION END

DTC P0502 ASCD VEHICLE SPEED SENSOR
EC-185
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC P0502 ASCD VEHICLE SPEED SENSORPFP:24810
Component DescriptionEBS01KHL
The ECM receives vehicle speed sensor signal via CAN communication line. It is sent from combination
meter. The ECM uses this signal for ASCD control. Refer toEC-355, "
AUTOMATIC SPEED CONTROL
DEVICE (ASCD)"for ASCD functions.
On Board Diagnosis LogicEBS01KHM
The MI will not light up for this self-diagnosis.
NOTE:
lIf DTC P0502 is displayed with DTC U1000 first perform the trouble diagnosis for DTC U1000. Refer
toEC-79, "
DTC U1000 CAN COMMUNICATION LINE".
lIf DTC P0502 is displayed with DTC P0606, first perform the trouble diagnosis for DTC P0606.
Refer toEC-215, "
DTC P0606 ECM".
DTC Confirmation ProcedureEBS01KHN
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Maintain the following condition for at least 5 seconds.
4. If DTC is detected, go toEC-186, "
Diagnostic Procedure".
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P0502
0502Vehicle speed sen-
sor circuit low inputVehicle speed signal is excessively low com-
pared with the driving condition.
lHarness or connectors
(The CAN communication line is open or
shorted.)
lCombination meter
lABS actuator and electric unit (control unit)
lWheel sensor
lECM
CKPS·RPM (TDC) More than 2,800 rpm
COOLAN TEMP/S More than 60°C (140°F)
Clutch pedal (M/T) Released
Shift lever 1st position
MBIB1084E

EC-186
DTC P0502 ASCD VEHICLE SPEED SENSOR
WITHOUT CONSULT-II
TESTING CONDITION:
Step 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
1. Start engine and warm it up to normal operating temperature.
2. Maintain the following condition for at least 5 seconds.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
5. If DTC is detected, go toEC-188, "
Diagnostic Procedure".
Diagnostic ProcedureEBS01KHO
1.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Refer toBRC-8, "
TROUBLE DIAGNOSIS".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2.CHECK COMBINATION METER
Check combination meter function.
Refer toDI-4, "
COMBINATION METERS".
>>INSPECTION END
Engine speed More than 2,800 rpm
Clutch pedal (M/T) Released
Shift lever 1st position

DTC P0503 ASCD VEHICLE SPEED SENSOR
EC-187
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC P0503 ASCD VEHICLE SPEED SENSORPFP:24810
Component DescriptionEBS01KHP
The ECM receives vehicle speed sensor signal via CAN communication line. It is sent from combination
meter. The ECM uses this signal for ASCD control. Refer toEC-355, "
AUTOMATIC SPEED CONTROL
DEVICE (ASCD)"for ASCD functions.
On Board Diagnosis LogicEBS01KHQ
The MI will not light up for this self-diagnosis.
NOTE:
lIf DTC P0503 is displayed with DTC U1000 first perform the trouble diagnosis for DTC U1000. Refer
toEC-79, "
DTC U1000 CAN COMMUNICATION LINE".
lIf DTC P0503 is displayed with DTC P0606, first perform the trouble diagnosis for DTC P0606.
Refer toEC-215, "
DTC P0606 ECM".
DTC Confirmation ProcedureEBS01KHR
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle at more than 10 km/h (6 MPH) for at least 5
seconds.
4. If DTC is detected, go toEC-188, "
Diagnostic Procedure".
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P0503
0503Vehicle speed sen-
sor circuit high inputVehicle speed signal is excessively high com-
pared with the driving condition.
lHarness or connectors
(The CAN communication line is open or
shorted.)
lCombination meter
lABS actuator and electric unit (control unit)
lWheel sensor
lECM
SEF058YMBIB1085E

EC-188
DTC P0503 ASCD VEHICLE SPEED SENSOR
WITHOUT CONSULT-II
TESTING CONDITION:
Step 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
1. Start engine.
2. Drivethevehicleatmorethan10km/h(6MPH).
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
5. If DTC is detected, go toEC-188, "
Diagnostic Procedure".
Diagnostic ProcedureEBS01KHS
1.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Refer toBRC-8, "
TROUBLE DIAGNOSIS".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2.CHECK COMBINATION METER
Check combination meter function.
Refer toDI-4, "
COMBINATION METERS".
>>INSPECTION END

DTC P0580, P0581 ASCD STEERING SWITCH
EC-209
C
D
E
F
G
H
I
J
K
L
MA
EC
Diagnostic ProcedureEBS01KIA
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer toEC-78, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
: Vehicle front
1. Body ground E21 2. ECM 3. Body ground E41
4. A/C high-pressure service valve 5. ABS actuator and electric unit
(control unit)6. Body ground E61
MBIB1218E

DTC P0642, P0643 SENSOR POWER SUPPLY
EC-225
C
D
E
F
G
H
I
J
K
L
MA
EC
Diagnostic ProcedureEBS01KIX
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer toEC-78, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor (1) harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 2 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3.CHECK APP SENSOR
Refer toEC-146, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace accelerator pedal assembly.
: Vehicle front
1. Body ground E21 2. ECM 3. Body ground E41
4. A/C high-pressure service valve 5. ABS actuator and electric unit
(control unit)6. Body ground E61
MBIB1218E
MBIB1201E
Voltage: Approximately 5.3V
PBIB2608E

EC-230
DTC P0652, P0653 SENSOR POWER SUPPLY
Diagnostic Procedure
EBS01KJ2
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer toEC-78, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor (1) harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
: Vehicle front
1. Body ground E21 2. ECM 3. Body ground E41
4. A/C high-pressure service valve 5. ABS actuator and electric unit
(control unit)6. Body ground E61
MBIB1218E
MBIB1201E
Voltage: Approximately 5.3V
PBIB2611E