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 Code DTC Detection Condition Trouble Area
P0818

Transfer neutral position switch remains on while vehicle is being driven under following conditions for 30 sec. (2-trip detection logic):


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

  • Transfer shift lever is in 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 transfer neutral position switch indicates that the transfer shift lever is in neutral under all of 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

A01J2YZE52

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01J5XVE12
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 2 Transfer Indicator Switch)

      Disconnect the T6 No. 2 transfer indicator switch connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T6-2 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01J7I4E01
      Text in Illustration
      *a

      Component without harness connected

      (No. 2 Transfer Indicator Switch)
      *b Pushed
      *c Not pushed

      Remove the No. 2 transfer indicator switch.

    2. Measure the resistance according to the value(s) in the table below.

      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. CHECK HARNESS AND CONNECTOR (NO. 2 TRANSFER INDICATOR SWITCH - ECM)


    1. Disconnect the T6 No. 2 transfer indicator switch connector.

    2. Disconnect the E8 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T6-1 - E8-23 (TFN) Always Below 1 Ω
      T6-1 or E8-23 (TFN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM