Nissan Maxima Service and Repair Manual: C1111 pump motor

Description

PUMP

The pump returns the brake fluid stored in the reservoir to the master cylinder by reducing the pressure.

MOTOR

The motor drives the pump according to the signals transmitted by the ABS actuator and electric unit (control unit).

DTC Logic

DTC DETECTION LOGIC

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Nissan Maxima. CHECK SELF-DIAGNOSIS RESULTS

Diagnosis Procedure

Regarding Wiring Diagram information

1.CONNECTOR INSPECTION

  1. Turn ignition switch OFF.
  2. Disconnect ABS actuator and electric unit (control unit) connector.
  3. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals.
  4. Reconnect connector and perform self-diagnosis.

2. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT

Nissan Maxima. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ABS actuator and electric unit (control unit) connector.
  3. Check voltage between ABS actuator and electric unit (control unit) connector E26 terminal 2 and ground.

Nissan Maxima. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Nissan Maxima. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) connector E26 terminals 1, 4 and ground.

Nissan Maxima. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Component Inspection

1.CHECK ACTIVE TEST

  1. On "ACTIVE TEST", select "ABS MOTOR".
  2. Touch "On" and "Off" on screen. Make sure motor relay, actuator relay, V/R output and M/R output operate as shown in table below.

Nissan Maxima. CHECK ACTIVE TEST

Special Repair Requirement

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit).

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    Nissan Maxima Service and Repair Manual

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