Dtc P0818 Driveline Disconnect Switch Input Circuit

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A343F Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

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

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

DTC 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):
  1. Vehicle speed is 25 km/h (16 mph) or more
  2. Transfer shift lever is in H
  1. Short in transfer neutral position switch circuit
  2. Transfer neutral position switch
  3. 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.
  1. The transfer shift lever is in the H position.
  2. The vehicle is traveling at 25 km/h (16 mph) or more.
  3. The transfer neutral position switch has been on for more than 30 seconds.
Then the ECM will illuminate the MIL and store the DTC.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0818 Driveline Disconnect Switch Input Circuit


INSPECTION PROCEDURE

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


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0818 Driveline Disconnect Switch Input Circuit

  1. Disconnect the C30 No. 2 transfer indicator switch connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C30-2 - Body ground
    		Always
    		Below 1 Ω
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to No. 2 Transfer Indicator Switch)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT NO. 2 TRANSFER INDICATOR SWITCH (TRANSFER NEUTRAL POSITION SWITCH)
Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0818 Driveline Disconnect Switch Input Circuit

  1. Remove the No. 2 transfer indicator switch.

  1. 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
    Text in Illustration
    *a
    		Component without harness connected
    (No. 2 Transfer Indicator Switch)
    *b
    		Pushed
    *c
    		Not pushed


NG
REPLACE NO. 2 TRANSFER INDICATOR SWITCH (TRANSFER NEUTRAL POSITION SWITCH) (HILUX_TGN26 RM00000479C008X.html)
OK


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

  1. Disconnect the C30 No. 2 transfer indicator switch connector.

  1. Disconnect the G146 ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C30-1 - G146-23 (TFN)
    		Always
    		Below 1 Ω
    C30-1 or G146-23 (TFN) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (HILUX_TGN26 RM000000VW2024X.html)