Component Tests and General Diagnostics

PARK/NEUTRAL POSITION SWITCH (BACK-UP SWITCH) (AUTO TRANS ONLY)
1. Check switch resistance.

Switch resistance: OPEN when PRNDL not in Reverse. Less than one ohm when PRNDL in Reverse.
2. Repair/replace as needed.

BACK UP SWITCH (MANUAL TRANS ONLY)
1. Check switch resistance.

Switch resistance: OPEN when transmission not in Reverse. Less than one ohm when transmission in Reverse

2. Repair/replace as needed.

BULB SOCKET
1. Check voltage through the bulb socket.
2. Check for damaged or corroded terminals or connectors. Check terminals for tightness.
3. Repair/replace as needed.