GSIC - Global Service Information Center

### DTC P0818 Driveline Disconnect Switch Input Circuit

## for Preparation Click here

## DESCRIPTION

The ECM 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

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. 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 ECM detects that the transfer shift lever is in neutral under the following conditions, the ECM will conclude that there is a malfunction of the transfer neutral position switch:

1. Transfer neutral position switch indicates that the transfer shift lever is in neutral.
2. Transfer shift lever is in the H position.
3. The vehicle is traveling at 25 km/h (16 mph) or more.
4. The transfer neutral position switch has been ON for more than 30 seconds.

If all of the above conditions are detected, the ECM will conclude that there is a malfunction of the transfer neutral position switch, illuminate the MIL and store the DTC.

## WIRING DIAGRAM

## INSPECTION PROCEDURE

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

1. Disconnect the T5 No. 2 transfer indicator switch connector.

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

   Standard resistance:

     Transfer Connection | Specified Condition
     T5-2 - Body ground | Below 1 Ω

| NG |

REPLACE COMBINATION METER

OK |

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

1. Remove the transfer indicator switch.

1. Measure the resistance of the switch when pushing the ball at the tip of the switch.

     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.INSPECT COMBINATION METER

1. Check the A/T P indicator light.

   1. Disconnect the T5 transfer indicator switch connector.

   2. Turn the ignition switch ON.

   3. Connect the T5-1 terminal of the wire harness side connector to the body ground, and then check the A/T P indicator light.

      OK:
        A/T P indicator light illuminates.

| NG |

REPLACE COMBINATION METER

OK |

REPAIR OR REPLACE HARNESS AND CONNECTOR