Dtc P0818/C2 Driveline Disconnect Switch Input Circuit


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 - TCM)

DTC P0818/C2 Driveline Disconnect Switch Input Circuit


DESCRIPTION

The TCM 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/C2
Transfer neutral position switch remains ON while vehicle is running 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 on H
  1. Short in transfer neutral position switch circuit
  2. Transfer neutral position switch
  3. TCM

MONITOR DESCRIPTION

The TCM 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 TCM 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 TCM will illuminate the MIL and store the DTC.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0818/C2 Driveline Disconnect Switch Input Circuit


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (NO. 2 TRANSFER INDICATOR SWITCH - BODY GROUND)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0818/C2 Driveline Disconnect Switch Input Circuit

  1. Disconnect the T6 switch connector.

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

    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)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0818/C2 Driveline Disconnect Switch Input Circuit

  1. Remove the transfer indicator switch.

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


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0818/C2 Driveline Disconnect Switch Input Circuit

  1. Disconnect the T6 switch connector.

  1. Disconnect the T18 TCM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    T6-1 - T18-16 (TFN)
    		Always
    		Below 1 Ω
    T18-16 (TFN) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM