Dtc P0818 Driveline Disconnect Switch Input Circuit

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A750F 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 No. 2 transfer indicator switch (transfer neutral position switch).
This DTC indicates that the signal indicating that the transfer neutral position switch remains on.

DTC No.
DTC Detection Conditions
Trouble Area
P0818
The signal indicating that the transfer neutral position switch remains on while the vehicle is running under the following conditions for 30 seconds (2-trip detection logic):
  1. The vehicle speed is 25 km/h (15.54 mph) or more.
  2. The transfer position switch is in H.
  1. Short in No. 2 transfer indicator switch circuit
  2. No. 2 transfer indicator switch (transfer neutral position switch)
  3. ECM

MONITOR DESCRIPTION

The ECM detects whether or not the transfer is in neutral by monitoring the signal from the transfer neutral position switch.
If the ECM detects that the transfer is in neutral under the following conditions, the ECM will conclude that there is a malfunction of the transfer neutral position switch, illuminate the MIL and store the DTC:
  1. The transfer neutral position switch indicates that the transfer shift lever is in neutral.
  2. The transfer shift lever is in the "H" position.
  3. The vehicle is being driven at 25 km/h (15.54 mph) or more.
  4. The transfer neutral signal has been on for more than 30 seconds.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A750F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). 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.A750F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). Dtc P0818 Driveline Disconnect Switch Input Circuit

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

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

    Standard Resistance:
    Transfer Connection
    		Condition
    		Specified Condition
    C30-2 - Body ground
    		Always
    		10 kΩ or higher
    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.A750F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe). 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
    		Pushed
    		Below 1 Ω
    1 - 2
    		Not pushed
    		10 kΩ or higher
    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 (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 C130 ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C30-1 - C130-25 (TFN)
    		Always
    		Below 1 Ω
    C30-1 or C130-25 (TFN) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (HILUX_TGN26 RM000000VW202KX.html)