2006 NISSAN VERSA ignition

DTC P0605 ECM
EC-429
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Revision: June 20062007 Versa
2. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs.
Refer to BL-214, "
ECM Re-communicating Function" .
3. Perform EC-77, "
VIN Registration" .
4. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
5. Perform EC-78, "
Throttle Valve Closed Position Learning" .
6. Perform EC-78, "
Idle Air Volume Learning" .
>>INSPECTION END

EC-430Revision: June 2006
DTC P0643 SENSOR POWER SUPPLY
2007 Versa
DTC P0643 SENSOR POWER SUPPLYPFP:18919
On Board Diagnosis LogicUBS00QKH
This self-diagnosis has the one trip detection logic.
FAIL -S AFE M OD E
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureUBS00QKI
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:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-433, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0643
0643Sensor power supply
circuit shortECM detects a voltage of power source for
sensor is excessively low or high.

Harness or connectors
(APP sensor 1 circuit is shorted.)
(Throttle position sensor circuit is shorted.)
[Camshaft position sensor (PHASE) circuit is
shorted.]

Accelerator pedal position sensor

Throttle position sensor

Camshaft position sensor (PHASE)
Engine operation condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.
SEF 0 58 Y

EC-432Revision: June 2006
DTC P0643 SENSOR POWER SUPPLY
2007 Versa
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.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
72 VSensor power supply
(Throttle position sensor)[Ignition switch: ON]Approximately 5V
78 OSensor power supply
[Camshaft position sensor
(PHASE)][Ignition switch: ON]Approximately 5V
102 SBSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
103 GRAccelerator pedal position
sensor 2[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released0.3 - 0.6V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed1.95 - 2.4V
104 YSensor ground
(APP sensor 2)[Engine is running]

Warm-up condition

Idle speedApproximately 0V
106 PSensor power supply
(APP sensor 1)[Ignition switch: ON]Approximately 5V
11 0 GAccelerator pedal position
sensor 1[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released0.6 - 0.9V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed3.9 - 4.7V
111 RSensor ground
(APP sensor 1)[Engine is running]

Warm-up condition

Idle speedApproximately 0V

DTC P0643 SENSOR POWER SUPPLY
EC-433
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Diagnostic ProcedureUBS00QKK
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to EC-150, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2. CHECK ACCELERATOR PEDAL POSITION 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 4 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
BBIA0705E
Voltage: Approximately 5V
PBIA9606J

EC-434Revision: June 2006
DTC P0643 SENSOR POWER SUPPLY
2007 Versa
3. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 4 and ECM terminal 106.
Refer to Wiring Diagram.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 5.
NG >> Repair short to ground or short to power in harness or connectors.
5. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-333, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace camshaft position sensor (PHASE).
6. CHECK THROTTLE POSITION SENSOR
Refer to EC-531, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-78, "
Throttle Valve Closed Position Learning" .
3. Perform EC-78, "
Idle Air Volume Learning" .
>>INSPECTION END
8. CHECK APP SENSOR
Refer to EC-539, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.Continuity should exist.
ECM terminal Sensor terminal Reference Wiring Diagram
72 Throttle position sensor terminal 1EC-528, "
Wiring Diagram"
78 Camshaft position sensor (PHASE) terminal 1EC-329, "Wiring Diagram"
106 APP sensor terminal 4EC-431, "Wiring Diagram"

EC-436Revision: June 2006
DTC P0850 PNP SWITCH
2007 Versa
DTC P0850 PNP SWITCHPFP:23006
Component DescriptionUBS00QKL
When the shift lever position is P or N (A/T, CVT), Neutral (M/T), park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists.
CONSULT-II Reference Value in Data Monitor ModeUBS00QKM
Specification data are reference values.
On Board Diagnosis LogicUBS00QKN
DTC Confirmation ProcedureUBS00QKO
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
If NG, go to EC-439, "
Diagnostic Procedure" .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive sec-
onds.
6. If 1st trip DTC is detected, go to EC-439, "
Diagnostic Procedure"
.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW

Ignition switch: ONShift lever: P or N (A/T, CVT),
Neutral (M/T)ON
Shift lever: Except above OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850
0850Park/neutral position switchThe signal of the park/neutral position (PNP)
switch is not changed in the process of
engine starting and driving.

Harness or connectors
[Park/neutral position (PNP) switch cir-
cuit is open or shorted.]

Park/neutral position (PNP) switch

TCM (CVT models)
Position (Shift lever) Known-good signal
N or P position (A/T, CVT)
Neutral position (M/T)ON
Except above OFF
ENG SPEED More than 1,100 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL 3.5 - 31.8 msec
VHCL SPEED SE More than 64km/h (29 MPH)
Shift lever Suitable position
SEF 2 12 Y
SEF 2 13 Y

DTC P0850 PNP SWITCH
EC-437
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Revision: June 20062007 Versa
Overall Function CheckUBS00QKP
Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
WITH GST
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 69 (PNP switch signal)
and ground under the following conditions.
3. If NG, go to EC-439, "
Diagnostic Procedure" .
Condition (Shift lever) Voltage V (Known-good data)
P or N position (A/T, CVT)
Neutral position (M/T)Approx. 0
Except aboveBATTERY VOLTAGE
(11 - 14V)
SEC9 10 C

DTC P0850 PNP SWITCH
EC-439
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Revision: June 20062007 Versa
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.
Diagnostic ProcedureUBS00QKR
A/T MODELS
1. CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E8, F8

Harness for open or short between PNP switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between PNP switch terminal 2 and ECM terminal 69.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
TERMI-
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NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
69 LPark/neutral position
(PNP) switch[Ignition switch: ON]

Shift lever: P or N (A/T, CVT),
Neutral (M/T)BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Except aboveApproximately 0V
Voltage: Battery voltage
PBIB3002E
Continuity should exist.