On Board Diagnostics II PCED

1999 PCED On Board Diagnostics II

SECTION 5: Pinpoint Tests

KL: Shift Indicator Lamp (SIL)

KL1 CHECK SHIFT INDICATOR LAMP OPERATION

Note: When the SIL is operating properly, it comes on when optimum shift speed is reached. The SIL will turn off after a shift has been completed or while in top gear.

Drive vehicle through all forward gears.
Look for the SIL to come on before the next upshift.
Look for the SIL to be off after a shift has been completed or while in top gear.

Is SIL on all the time?

Yes	No
KEY OFF. GO to KL4 .	KEY OFF. GO to KL2 .

KL2 CHECK SIL CIRCUIT FUSE

Remove SIL circuit fuse and inspect.

Is fuse OK?

Yes	No
INSTALL SIL circuit fuse. GO to KL3 .	REPAIR short circuit. REPLACE SIL circuit fuse.

KL3 CHECK SIL BULB

Remove SIL bulb and inspect.

Is SIL bulb OK?

Yes	No
GO to KL5 .	REPLACE SIL bulb.

KL4 CHECK SIL CIRCUIT FOR SHORT TO GROUND IN HARNESS

Shift transmission to highest gear.
Disconnect PCM.
Measure resistance between PCM harness connector pin 72 and battery negative post.

Is resistance greater than 10,000 ohms?

Yes	No
REPLACE PCM (refer to Section 2 , Flash EEPROM).	REPAIR short circuit.

KL5 CHECK IGN START/RUN VOLTAGE TO SIL SOCKET

SIL bulb removed.
Transmission in any gear except top gear.
Key on, engine off.
Measure voltage of the SIL circuit between the SIL socket and chassis ground.

Is the voltage greater than 10.5 volts?

Yes	No
KEY OFF. GO to KL7 .	KEY OFF. RECONNECT SIL bulb. GO to KL6 .

KL6 CHECK OPERATION OF TOP GEAR SWITCH

Transmission in any gear except top gear.
Disconnect top gear switch.
Measure resistance of the top gear switch.

Is resistance less than 5.0 ohms?

Yes	No
REPAIR open circuit.	REPLACE top gear switch.

KL7 CHECK SIL CIRCUIT FOR OPEN IN HARNESS

SIL bulb removed.
Disconnect PCM.
Measure resistance between PCM harness connector pin 72 and SIL bulb socket.

Is resistance less than 5.0 ohms?

Yes	No
REPLACE PCM (refer to Section 2 , Flash EEPROM).	REPAIR open circuit.