TEST
ACTION
APPLICABILITY
9
Turn the ignition off to the lock position.
Disconnect the Transmission 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 10
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.
Perform TRANSMISSION NO TROUBLE CODE VERIFICA-
TION TEST.
10
Turn ignition off to the lock position.
Remove the Backup Lamp bulb.
Disconnect the Transmission TRS harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Backup Lamp Supply circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair Backup Lamp Supply circuit for a short to ground. Check
the fuse and replace if necessary.
Perform TRANSMISSION NO TROUBLE CODE VERIFICA-
TION TEST.
No
→ Test Complete.
429
TRANSMISSION - 42RLE
*BACKUP LAMPS INOPERATIVE —
Continued