Nissan Maxima Service and Repair Manual: ASCD brake switch

Description

When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.

ECM detects the state of the brake pedal by those two types of input (ON/OFF signal).

Refer to EC-68, "System Diagram" for the ASCD function.

Component Function Check

1.CHECK ASCD BRAKE SWITCH FUNCTION

With CONSULT

  1. Turn ignition switch ON.
  2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT.
  3. Check "BRAKE SW1" indication under the following conditions.

Nissan Maxima. CHECK ASCD BRAKE SWITCH FUNCTION

Without CONSULT

Nissan Maxima. CHECK ASCD BRAKE SWITCH FUNCTION

  1. Turn ignition switch ON.
  2. Check the voltage between ECM harness connectors

Nissan Maxima. CHECK ASCD BRAKE SWITCH FUNCTION

Diagnosis Procedure

1.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

Nissan Maxima. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ASCD brake switch harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between ASCD brake switch harness connector and ground.

Nissan Maxima. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

2.DETECT MALFUNCTIONING PART

Check the following.

  • Fuse block (J/B) connector E6
  • Junction block connectors E44, E46
  • 10 A fuse (No. 3)
  • Harness for open or short between ASCD brake switch and fuse

3.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.
  4. Also check harness for short to ground and short to power.

Nissan Maxima. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

4.DETECT MALFUNCTIONING PART

Check the following.

  • Junction block connectors E45, E46
  • Harness for open or short between ASCD brake switch and ECM

5.CHECK ASCD BRAKE SWITCH

6.CHECK INTERMITTENT INCIDENT

Component Inspection (ASCD Brake Switch)

1.CHECK ASCD BRAKE SWITCH-I

Nissan Maxima. CHECK ASCD BRAKE SWITCH-I

  1. Turn ignition switch OFF.
  2. Disconnect ASCD brake switch harness connector.
  3. Check the continuity between ASCD brake switch terminals under the following conditions.

Nissan Maxima. CHECK ASCD BRAKE SWITCH-I

2.CHECK ASCD BRAKE SWITCH-II

Nissan Maxima. CHECK ASCD BRAKE SWITCH-II

  1. Adjust ASCD brake switch installation. Refer to BR-14, "Inspection and Adjustment".
  2. Check the continuity between ASCD brake switch terminals under the following conditions

Nissan Maxima. CHECK ASCD BRAKE SWITCH-II

    P2138 APP sensor
    Description The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Ac ...

    ASCD indicator
    Description ASCD indicator lamp illuminates to indicate ASCD operation status. CRUISE is integrated in combination meter. CRUISE illuminates when MAIN switch on ASCD steering switch is turned ...

    Other materials:

    Glass
    When cleaning the rear window, it may be easier to clean if the high-mounted stop light is removed first. Be careful when removing the high-mounted stop light to reduce the risk of damaging the high-mounted stop light wires. To remove the high-mounted stop light: Push toward rear of ...

    Squeak and rattle trouble diagnoses
    Work Flow CUSTOMER INTERVIEW Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diagnostic Worksheet during the interview to document the facts and conditions when the noise occurs and any customer's comments; refer to RF-64, "Diagnost ...

    Bluetooth control unit
    Reference Values TERMINAL LAYOUT PHYSICAL VALUES ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2022 Copyright www.nimainfo.com
    0.0071