Nissan Maxima Service and Repair Manual: Power supply and ground circuit
Diagnosis Procedure
1.CHECK GROUND CONNECTION-I
- Turn ignition switch OFF.
- Check ground connection E9. Refer to Ground Inspection
2.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
- Disconnect ECM harness connector.
- Check the continuity between ECM harness connector and ground.
- Also check harness for short to power.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E11, F2
- Harness for open or short between ECM and ground
4.CHECK ECM POWER SUPPLY CIRCUIT-I
- Reconnect ECM harness connector.
- Turn ignition switch OFF and then ON.
- Check the voltage between ECM harness connectors.
5.DETECT MALFUNCTIONING PART
Check the following.
- IPDM E/R connector E18
- 10 A fuse (No. 35)
- Harness for open or short between ECM and fuse
6.CHECK ECM POWER SUPPLY CIRCUIT-II
- Turn ignition switch OFF and wait at least 10 seconds.
- Check the voltage between ECM harness connectors.
7.CHECK ECM POWER SUPPLY CIRCUIT-III
- Turn ignition switch ON.
- Check the voltage between IPDM E/R harness connector and ground.
8.CHECK INTERMITTENT INCIDENT
9.CHECK ECM POWER SUPPLY CIRCUIT-IV
- Turn ignition switch OFF and wait at least 10 seconds.
- Check the voltage between ECM harness connectors.
10.CHECK ECM POWER SUPPLY CIRCUIT-V
- Disconnect ECM harness connector.
- Disconnect IPDM E/R 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.
11.CHECK 15 A FUSE
- Disconnect 15 A fuse (No. 42) from IPDM E/R.
- Check 15 A fuse.
12.CHECK ECM POWER SUPPLY CIRCUIT-VI
- Disconnect ECM harness connector.
- Disconnect IPDM E/R 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.
13.DETECT MALFUNCTIONING PART
Check the following.
- Junction block connectors E44, E45
- Harness for open or short between ECM and IPDM E/R
14.CHECK INTERMITTENT INCIDENT
Trouble diagnosis - specification value
Description
The specification (SP) value indicates the tolerance of the value that is
displayed in "SPEC" of "DATA MONITOR"
mode of CONSULT during normal operation of the Engine Control System. W ...
U0101 can comm circuit
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excelle ...
Other materials:
ECM branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connection (unit side and connector
side).
- Models without automatic drive positione ...
Headlamp (LO) circuit
Description
The IPDM E/R (intelligent power distribution module engine room) controls the
headlamp low relay based on inputs from the BCM over the CAN communication
lines. When the headlamp low relay is energized, power flows through fuses 51
and 52, located in the IPDM E/R. Power then flows ...
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the condition
and the environment when the incident/malfunction occurred).
2.CONFIRM THE SYMPTOM
Try to confirm the symptom described by the ...
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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