AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0818

DTC Code DTC Name
P0818 Driveline Disconnect Switch Input Circuit

DESCRIPTION

The ECM detects the signal from the transfer neutral position switch.

This DTC indicates that the transfer neutral position switch remains ON.

DTC No. DTC Detection Condition Trouble Area
P0818

Transfer neutral position switch remains ON while vehicle is running under following conditions for 30 sec. (2 trip detection logic):


  • Vehicle speed is 25 km/h (16 mph) or more

  • Transfer shift lever is on H

  • Short in transfer neutral position switch circuit

  • Transfer neutral position switch

  • ECM

MONITOR DESCRIPTION

The ECM detects whether or not the transfer shift lever is in neutral by monitoring the signal from the transfer neutral position switch.

If the ECM detects that the transfer shift lever is in neutral under the following conditions, the ECM will conclude that there is a malfunction of the transfer neutral position switch:


Then the ECM will illuminate the MIL and store the DTC.

WIRING DIAGRAM

A01J634E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK WIRE HARNESS (NO. 2 TRANSFER INDICATOR SWITCH - BODY GROUND)


    1. A01J4X9E02

      Disconnect the T6 switch connector.

    2. Measure the resistance of the wire harness side connector.

      Standard resistance
      Transfer Connection Specified Condition
      T6-2 - Body ground Below 1 Ω

    NG

    REPLACE COMBINATION METER ASSEMBLY

    OK

  2. INSPECT NO. 2 TRANSFER INDICATOR SWITCH (TRANSFER NEUTRAL POSITION SWITCH)


    1. A01J3GCE03

      Remove the transfer indicator switch.

    2. Measure the resistance of the switch when pushing the ball at the tip of the switch.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2 Not pushed 10 kΩ or higher
      1 - 2 Pushed Below 1 Ω

    NG

    REPLACE NO. 2 TRANSFER INDICATOR SWITCH (TRANSFER NEUTRAL POSITION SWITCH)

    OK

  3. INSPECT COMBINATION METER ASSEMBLY


    1. Check the A/T P indicator light.


      1. Disconnect the T6 switch connector.

      2. Turn the ignition switch ON.

      3. Connect the T6-1 terminal of the wire harness side connector to the body ground, and then check the A/T P indicator light illuminates.

        OK
        A/T P indicator light illuminates.

    NG

    REPLACE COMBINATION METER ASSEMBLY

    OK

    REPAIR OR REPLACE HARNESS AND CONNECTOR