Nissan Maxima Service and Repair Manual: P1805 brake switch

Description

Brake switch signal is applied to the ECM via the stop lamp switch when the brake pedal is depressed. This signal is used mainly to decrease the engine speed when the vehicle is being driver.

DTC Logic

DTC DETECTION LOGIC

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON.
  2. Fully depress the brake pedal for at least 5 seconds.
  3. Erase the DTC.
  4. Check 1st trip DTC.

Diagnosis Procedure

1.CHECK STOP LAMP SWITCH CIRCUIT

  1. Turn ignition switch OFF.
  2. Check the stop lamp when depressing and releasing the brake pedal.

2.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

Nissan Maxima. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

  1. Disconnect stop lamp switch harness connector.
  2. Check the voltage between stop lamp switch harness connector and ground.

Nissan Maxima. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

3.DETECT MALFUNCTIONING PART

Check the following.

  • Fuse block (J/B) connector E6
  • 10 A fuse (No. 7)
  • Harness for open or short between battery and stop lamp switch

4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

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

Nissan Maxima. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

5.DETECT MALFUNCTIONING PART

Check the following.

  • Fuse block (J/B) connector E6
  • Junction block connectors E44, E45
  • Harness for open or short between ECM and stop lamp switch

6.CHECK STOP LAMP SWITC

7.CHECK INTERMITTENT INCIDENT

Component Inspection (Stop Lamp Switch)

1.CHECK STOP LAMP SWITCH-I

Nissan Maxima. CHECK STOP LAMP SWITCH-I

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

Nissan Maxima. CHECK STOP LAMP SWITCH-I

2.CHECK STOP LAMP SWITCH-II

Nissan Maxima. CHECK STOP LAMP SWITCH-II

  1. Adjust stop lamp switch installation. Refer to BR-18, "Removal and Installation".
  2. Check harness continuity between stop lamp switch terminals under the following conditions.

Nissan Maxima. CHECK STOP LAMP SWITCH-II

    P1801 vias control solenoid valve 2
    Description The VIAS control solenoid valve 2 cuts the intake manifold vacuum signal for power valve 2 control. It responds to ON/OFF signals from the ECM. When the solenoid is OFF, the vacuum ...

    P2096, P2097, P2098, P2099 A/F sensor 1
    Description The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a he ...

    Other materials:

    Headlamp aiming adjustment
    Description PREPARATION BEFORE ADJUSTING CAUTION: Do not use organic solvent (thinner, gasoline etc.). NOTE: For details, refer to the regulations in your own country. Perform aiming adjustment if the vehicle front body has been repaired and/or the headlamp assembly has been replaced. ...

    L terminal circuit (short)
    Description The terminal "L" circuit controls the charge warning lamp. The charge warning lamp turns ON when the ignition switch is set to ON or START. When the generator is providing sufficient voltage with the engine running, the charge warning lamp turns off. If the charge warning lamp i ...

    VDC off indicator lamp
    Description Component Function Check 1.VDC OFF INDICATOR LAMP OPERATION CHECK 1 Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON. 2.VDC OFF INDICATOR LAMP OPERATION CHECK 2 Check that the VDC OFF indicator lamp in the combination meter tur ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0438