A750F Automatic Transmission Transaxle. 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

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

DTC P0818 Driveline Disconnect Switch Input Circuit

DESCRIPTION

The TCM detects the signal from the No. 2 transfer indicator switch (the transfer neutral position switch).
This DTC indicates that the No. 2 transfer indicator switch remains on.

DTC No.	DTC Detection Conditions	Trouble Area
P0818	The No. 2 transfer indicator switch remains on while the vehicle is running under the following conditions for 30 seconds. (2-trip detection logic): Vehicle speed is 25.1 km/h (15.6 mph) or more. Transfer high and low shift lever position: H.	Short in No. 2 transfer indicator switch (the transfer neutral position switch) circuit No. 2 transfer indicator switch TCM

MONITOR DESCRIPTION

The TCM detects whether or not the transfer high and low shift lever is in neutral by monitoring the signal from the No. 2 transfer indicator switch.
If the TCM detects that the transfer high and low shift lever is in neutral under the following conditions, the TCM will conclude that there is a malfunction of the No. 2 transfer indicator switch:

No. 2 transfer indicator switch indicates that the transfer high and low shift lever is in neutral.
Transfer high and low shift lever is in the H position.
The vehicle is traveling at 25.1 km/h (15.6 mph) or more.
The No. 2 transfer indicator switch has been on for more than 30 seconds.

If all of the above conditions are detected, the TCM will conclude that there is a malfunction of the No. 2 transfer indicator switch, illuminate the MIL and store the DTC.

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)

Disconnect the No. 2 transfer indicator switch connector.

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)

Text in Illustration
*a	Front view of wire harness connector (to No. 2 Transfer Indicator Switch)

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.INSPECT NO. 2 TRANSFER INDICATOR SWITCH

Remove the No. 2 transfer indicator switch.

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

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

REPLACE NO. 2 TRANSFER INDICATOR SWITCH (HILUX_TGN26 RM00000479C00JX.html)

OK

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

Disconnect the C30 No. 2 transfer indicator switch connector.

Disconnect the G40 TCM connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
C30-1 - G40-16 (TFN)
Always
Below 1 Ω
C30-1 or G40-16 (TFN) - Body ground
Always
10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE TCM (HILUX_TGN26 RM0000048F3005X.html)

Tester Connection	Condition	Specified Condition
C30-2 - Body ground	Always	Below 1 Ω

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