ignition NISSAN NAVARA 2005 Repair Workshop Manual

DTC P0605 ECM
EC-213
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EC
DTC P0605 ECMPFP:23710
DescriptionEBS01KIC
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicEBS01KID
DTC Confirmation ProcedureEBS01KIE
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go toEC-214, "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go toEC-214, "
Diagnostic Procedure".
MBIB0625E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605
0605Engine control module
(ROM)ECM ROM is malfunctioning.
lECM
SEF817Y

EC-214
DTC P0605 ECM
Diagnostic Procedure
EBS01KIF
1.INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. PerformEC-213, "
DTC Confirmation Procedure",again.
5. Is DTC P0605 displayed again?
Without CONSULT-II
1. Turn ignition switch ON.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory. Refer toEC-27
.
3. PerformEC-213, "
DTC Confirmation Procedure",again.
4. Is DTC 0605 displayed again?
Ye s o r N o
Yes >>GOTO2.
No >>INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer toBL-172, "
ECM
Re-communicating Function".
3. Perform Fuel Pump Learning Value Clearing. Refer toEC-24, "
Fuel Pump Learning Value Clearing".
4. Perform Injector Adjustment Value Registration. Refer toEC-25, "
Injector Adjustment Value Registration".
>>INSPECTION END

DTC P0606 ECM
EC-215
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EC
DTC P0606 ECMPFP:23710
DescriptionEBS01KIG
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicEBS01KIH
DTC Confirmation ProcedureEBS01KII
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go toEC-216, "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go toEC-216, "
Diagnostic Procedure".
MBIB0625E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0606
0606Engine control module
(Processor)ECM calculation function is malfunctioning.
lECM
SEF817Y

EC-216
DTC P0606 ECM
Diagnostic Procedure
EBS01KIJ
1.INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. PerformEC-215, "
DTC Confirmation Procedure",again.
5. Is DTC P0606 displayed again?
Without CONSULT-II
1. Turn ignition switch ON.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory. Refer toEC-27
.
3. PerformEC-215, "
DTC Confirmation Procedure",again.
4. Is DTC 0606 displayed again?
Ye s o r N o
Yes >>GOTO2.
No >>INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer toBL-172, "
ECM
Re-communicating Function".
3. Perform Fuel Pump Learning Value Clearing. Refer toEC-24, "
Fuel Pump Learning Value Clearing".
4. Perform Injector Adjustment Value Registration. Refer toEC-25, "
Injector Adjustment Value Registration".
>>INSPECTION END

EC-218
DTC P0628, P0629 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01KIN
DTC Confirmation ProcedureEBS01KIO
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.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Let engine idle for at least 5 seconds.
4. If DTC is detected, go toEC-220, "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Let engine idle 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-220, "
Diagnostic Procedure".
29 B Fuel pump[Engine is running]
lWarm-up condition
lIdle speed0.5 - 1.0V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpm0.5 - 1.0V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0887E
MBIB0888E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0628
0628Fuel pump control circuit
low inputECM detects a control circuit for the fuel pump is
open or short to ground.
lHarness or connectors
(The fuel pump circuit is open or
shorted.)
lFuel pump P0629
0629Fuel pump control circuit
high outputECM detects a control circuit for the fuel pump is
short to power.
SEF817Y

EC-220
DTC P0628, P0629 FUEL PUMP
Diagnostic Procedure
EBS01KIQ
1.CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and fuel pump (2) harness
connector.
–Fuel pump temperature sensor (1)
3. Check harness continuity between ECM terminal 10 and fuel
pump terminal 1.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
2.CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 29 and fuel pump terminal 2.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
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 FUEL PUMP
Refer toEC-221, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Value Clearing. Refer toEC-24, "
Fuel Pump Learning Value Clearing".
>>INSPECTION END
5.CHECK INTERMITTENT INCIDENT
Refer toEC-70, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END Continuity should exist.
MBIB1389E
Continuity should exist.

EC-222
DTC P0642, P0643 SENSOR POWER SUPPLY
DTC P0642, P0643 SENSOR POWER SUPPLY
PFP:18002
ECM Terminals and Reference ValueEBS01KIT
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis LogicEBS01KIU
The MI will not light up for these self-diagnoses.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
82 WAccelerator pedal position sensor 1
power supply[Ignition switch ON]Approximately 5.3V
83 R Accelerator pedal position sensor 1[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully released0.95 - 1.17V
[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully
depressedMore than 4.6V
84 BAccelerator pedal position sensor 1
ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V
85 —Sensor ground
(Accelerator pedal position sensor
shield circuit)[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V
90 WAccelerator pedal position sensor 2
power supply[Ignition switch ON]Approximately 5.3V
91 R Accelerator pedal position sensor 2[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully released0.58 - 0.78V
[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully
depressedMore than 2.3V
92 BAccelerator pedal position sensor 2
ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0642
0642Sensor power supply cir-
cuit lowECM detects a voltage of power source for sen-
sor is excessively low.
lHarness or connectors
(The APP sensor 1 power supply cir-
cuit is shorted.)
lAccelerator pedal position sensor
(Accelerator pedal position sensor 1) P0643
0643Sensor power supply cir-
cuit highECM detects a voltage of power source for Sen-
sor is excessively high.

DTC P0642, P0643 SENSOR POWER SUPPLY
EC-223
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DTC Confirmation ProcedureEBS01KIV
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go toEC-225, "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go toEC-225, "
Diagnostic Procedure".
SEF817Y

DTC P0642, P0643 SENSOR POWER SUPPLY
EC-225
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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

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-227
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EC
DTC P0652, P0653 SENSOR POWER SUPPLYPFP:18002
ECM Terminals and Reference ValueEBS01KIY
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
44 W Crankshaft position sensor power supply[Ignition switch ON]Approximately 5.3V
45 W Camshaft position sensor power supply[Ignition switch ON]Approximately 5.3V
63 R Fuel rail pressure sensor power supply[Ignition switch ON]Approximately 5.3V
64 VSensor power supply
(Turbocharger boost sensor / Refrigerant
pressure sensor)[Ignition switch ON]Approximately 5.3V
82 WAccelerator pedal position sensor 1 power
supply[Ignition switch ON]Approximately 5.3V
83 R Accelerator pedal position sensor 1[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully released0.95 - 1.17V
[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully
depressedMore than 4.6V
84 B Accelerator pedal position sensor 1 ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V
85 —Sensor ground
(Accelerator pedal position sensor shield
circuit)[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V
90 WAccelerator pedal position sensor 2 power
supply[Ignition switch ON]Approximately 5.3V
91 R Accelerator pedal position sensor 2[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully released0.58 - 0.78V
[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully
depressedMore than 2.3V
92 B Accelerator pedal position sensor 2 ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V