Nissan Maxima Service and Repair Manual: P1805 brake switch

Nissan Maxima Service and Repair Manual / Engine / Engine control system / DTC/circuit diagnosis / 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:

    Opener operation
    To open the trunk lid, push the opener switch. To close the trunk lid, lower and push the trunk lid down securely. NOTE: You can open the trunk lid with the Intelligent Key. For additional information, refer to "NISSAN Intelligent Key" in this section. Cancel switch When the cancel ...

    U1010 control unit (CAN)
    DTC Logic DTC DETECTION LOGIC U1200 AV CONTROL UNIT DTC Logic U1201 AV CONTROL UNIT DTC Logic U1202 AV CONTROL UNIT DTC Logic ...

    Tire dressings
    NISSAN does not recommend the use of tire dressings. Tire manufacturers apply a coating to the tires to help reduce discoloration of the rubber. If a tire dressing is applied to the tires, it may react with the coating and form a compound. This compound may come off the tire while driving and ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2020 Copyright www.nimainfo.com
    0.0184