Nissan Maxima Service and Repair Manual: Power supply and ground circuit

Diagnosis Procedure

1.CHECK GROUND CONNECTION-I

  1. Turn ignition switch OFF.
  2. Check ground connection E9. Refer to Ground Inspection

2.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I

  1. Disconnect ECM harness connector.
  2. Check the continuity between ECM harness connector and ground.
  3. Also check harness for short to power.

Nissan Maxima. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I

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

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-I

  1. Reconnect ECM harness connector.
  2. Turn ignition switch OFF and then ON.
  3. Check the voltage between ECM harness connectors.

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-I

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

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-II

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Check the voltage between ECM harness connectors.

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-II

7.CHECK ECM POWER SUPPLY CIRCUIT-III

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-III

  1. Turn ignition switch ON.
  2. Check the voltage between IPDM E/R harness connector and ground.

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-III

8.CHECK INTERMITTENT INCIDENT

9.CHECK ECM POWER SUPPLY CIRCUIT-IV

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-IV

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Check the voltage between ECM harness connectors.

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-IV

10.CHECK ECM POWER SUPPLY CIRCUIT-V

  1. Disconnect ECM harness connector.
  2. Disconnect IPDM E/R harness connector.
  3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
  4. Also check harness for short to ground and short to power.

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-V

11.CHECK 15 A FUSE

  1. Disconnect 15 A fuse (No. 42) from IPDM E/R.
  2. Check 15 A fuse.

12.CHECK ECM POWER SUPPLY CIRCUIT-VI

  1. Disconnect ECM harness connector.
  2. Disconnect IPDM E/R harness connector.
  3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
  4. Also check harness for short to ground and short to power.

Nissan Maxima. CHECK ECM POWER SUPPLY CIRCUIT-VI

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:

    U121D AV control unit
    DTC Logic Diagnosis Pro 1.CHECK PLAYBACK OF A DISK (CD) U121E AV CONTROL UNIT DTC Logic Diagnosis Procedure 1.CHECK PLAYBACK OF A DISK (CD) U1225 AV CONTROL UNIT DTC Logic DTC DETECTION LOGIC ...

    B2112 sliding motor
    Description The seat sliding motor is installed to the seat frame. The seat sliding motor is activated with the driver seat control unit. Slides the seat forward/backward by changing the rotation direction of sliding motor. DTC Logic DTC DETECTION LOGIC DTC No. Trouble diag ...

    Inside the vehicle
    The maintenance items listed here should be checked on a regular basis, such as when performing scheduled maintenance, cleaning the vehicle, etc. Accelerator pedal: Check the pedal for smooth operation and make sure the pedal does not catch or require uneven effort. Keep the floor mat away ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2025 Copyright www.nimainfo.com
    0.0182