Nissan Maxima Service and Repair Manual: P0850 PNP switch
Description
When the selector lever position is P or N, park/neutral position (PNP) signal from the TCM is sent to ECM.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
3.CHECK PNP SIGNAL
With CONSULT
- Turn ignition switch ON.
- Select "P/N POSI SW" in "DATA MONITOR" mode with CONSULT. Then check the "P/N POSI SW" signal under the following conditions
4.PERFORM DTC CONFIRMATION PROCEDURE
- Select "DATA MONITOR" mode with CONSULT.
- Start engine and warm it up to normal operating temperature.
- Maintain the following conditions for at least 50 consecutive seconds.
- Check 1st trip DTC.
CAUTION: Always drive vehicle at a safe speed.
5.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-398, "Component Function Check".
NOTE: Use component function check to check the overall function of the park/neutral position (PNP) signal circuit.
During this check, a 1st trip DTC might not be confirmed.
Component Function Check
1.PERFORM COMPONENT FUNCTION CHECK
- Turn ignition switch ON.
- Check the voltage between ECM harness connectors.
Diagnosis Procedure
1.CHECK DTC WITH TCM
2.CHECK PNP SIGNAL CIRCUIT FOR OPEN AND SHORT-I
- Turn ignition switch OFF.
- Disconnect TCM harness connector.
- Disconnect IPDM E/R harness connector.
- Check the continuity between TCM harness connector and IPDM E/R harness connector.
- Also check harness for short to ground and short to power.
3.CHECK PNP SIGNAL CIRCUIT FOR OPEN AND SHORT-II
- Disconnect IPDM E/R harness connectors.
- Disconnect ECM harness connector.
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
- Also check harness for short to ground and short to power.
4.DETECT MALFUNCTIONING PART
Check the following.
- Junction block harness connectors E45, E50
- Harness for open or short between ECM and IPDM E/R
5.CHECK INTERMITTENT INCIDENT
P0643 sensor power supply
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform
the following before conducting
the n ...
P1078, P1084 EVT control position sensor
Description
Exhaust valve timing control position sensor detects the concave
groove of the exhaust camshaft rear end.
This sensor signal is used for sensing a position of the exhaust camshaf ...
Other materials:
Diagnosis and repair work flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom
(the condition and the environment
when the incident/malfunction occurred) using the "Diagnostic Work Sheet".
(Refer to EC-12, "Diagnostic ...
Steering switch
Description
When one of the steering wheel audio control switches is pushed, the
resistance in the steering wheel audio control switch circuit changes,
depending on which button is pushed.
Diagnosis Procedure
1.CHECK STEERING SWITCH RESISTANCE
Disconnect steering switch connector M88. ...
Subwoofer
Removal and Installation
Subwoofer (LH)
Subwoofer (RH)
Subwoofer screws
Subwoofer connectors
REMOVAL
Remove the rear parcel shelf finisher. Refer to INT-28, "Removal
and Installation".
Remove the subwoofer screws.
Pull out the subwoofer, disconnect the harness con ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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