TEST
ACTION
APPLICABILITY
5
Turn the ignition off to the lock position.
Disconnect the TRS harness connector.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Fused Ignition Switch
Output circuit in the TRS harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?
All
Yes
→ Go To 6
No
→ Repair the Fused Ignition Switch Output circuit for an open. If
the fuse is open make sure to check for a short to ground.
6
Turn the ignition off to the lock position.
Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmis-
sion Adapter kit 8333-1A.
Remove the Backup Lamp bulb(s).
Ignition on, engine not running.
Note: Check connectors - Clean/repair as necessary.
Using a 12-volt test light connected to ground, check the Backup Lamp Supply circuit
in both Backup Lamp sockets while pressing the Reverse Light Test button on the
Transmission Simulator.
Does the test light illuminate brightly on either Backup Lamb Bulb socket?
All
Yes
→ Repair the Backup Lamp Ground circuit for an open.
No
→ Repair the Backup Lamp Supply circuit for an open.
156
TRANSMISSION - NGC
*BACKUP LAMPS INOPERATIVE —
Continued