## Entry Light Control Circuit Input Test

1. | Remove the gauge assembly.

2. | Disconnect the 20P connector (A) and 30P connector (B) from the gauge assembly (C).

3. | Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to 5.

4. | With the connector still disconnected, make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to 5.
Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained
--- | --- | --- | --- | ---
A9 | BLK | Under all conditions | Check for continuity to ground: There should be continuity. | Poor ground (G401) An open in the wire
A11
A1 | WHT/RED | Under all conditions | Check for voltage to ground: There should be battery voltage. | Blown No.8 (15 A) fuse in the under-hood fuse/relay box An open in the wire
A2 | YEL | ignition switch ON (ll) | Check for voltage to ground: There should be battery voltage. | Blown No. 16 (7.5 A) fuse in the under-hood fuse/relay box An open in the wire
A12 | GRN/RED | Ceiling light switch in middle position. | Attach to ground: The ceiling light should come on. | Blown No. 8 (15 A) fuse in the under-hood fuse/relay box Faulty ceiling light An open in the wire
C12 | BLU/ORN | Under all conditions | Check for continuity between the C12 terminal and keyless receiver unit 5P connector No.2 terminal: There should be continuity. | An open in the wire

5. | Reconnect the connectors to the gauge assembly, and make sure these input tests at the appropriate connectors on the gauge assembly. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the gauge internal circuit must be faulty; replace the gauge assembly.
Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained
--- | --- | --- | --- | ---
P14 | GRN | Driver's door open | Check for voltage to ground: There should be 1 V or less. | Faulty driver's door switch An open in the wire
Driver's door closed | Check for voltage to ground: There should be 5 V or more. | Faulty Faulty driver's door switch Short to ground
A13 | LT GRN/RED | Front passenger's door open | Check for voltage to ground: There should be 1 V or less. | Faulty driver's door switch An open in the wire
Front passenger's door closed | Check for voltage to ground: There should be 5 V or more. | Faulty driver's door switch Short to ground
A16 | GRN/RED | Left (right) rear door open | Check for voltage to ground: There should be 1 V or less. | Faulty driver's door switch An open in the wire
Left (right) rear door closed | Check for voltage to ground: There should be 5 V or more. | Faulty driver's door switch Short to ground
Tailgate open | Check for voltage to ground: There should be 1 V or less. | Faulty tailgate latch switch An open in the wire
Tailgate closed | Check for voltage to ground: There should be 5 V or more. | Faulty tailgate latch switch Short to ground
C5 | BLU/RED | ignition key inserted into the ignition switch | Check for voltage to ground: There should be 1 V or less. | Poor ground (G401) Faulty ignition key switch An open in the wire
Ignition key removed from the ignition switch | Check for voltage to ground: There should be 5 V or more. | Faulty ignition key switch Short to ground
C2 | WHT/BLK | Driver's door lock knob switch locked | Check for voltage to ground: There should be 1 V or less. | Poor ground (G401) Faulty driver's door lock knob switch An open in the wire
Driver's door lock knob switch unlocked | Check for voltage to ground: There should be 5 V or more. | Faulty driver's door lock knob switch Short to ground