Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
| 
 Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.  | ||||
1  | 
 Does the voltage measured equal the specified value?  | battery positive voltage  | ||
2  | 
 Does the voltage measured equal the specified value?  | battery positive voltage  | ||
3  | Use a J 39200 DMM in order to measure the voltage between the INST LPS fuse CKT 9 terminal and ground. Does the voltage measured equal the specified value?  | battery positive voltage  | ||
4  | Connect a fused jumper between terminal C and terminal D of the lamp dimmer module harness connector. Do the interior lamps light?  | --  | ||
5  | 
 Does the voltage measured equal the specified value?  | battery positive voltage  | ||
6  | Repair the open in CKT 32 between the fuse block and splice S213. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | --  | |
7  | Repair the open in CKT 9 between splice S216 and the fuse block. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | --  | |
8  | Replace the lamp dimmer module. Is the repair complete?  | --  | --  | |
9  | Repair the open in CKT 8 between the lamp dimmer module and splice S218. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | --  | |
10  | Connect a fused jumper between terminal B and terminal C of the panel dimmer switch harness connector. Do the interior lamps light?  | --  | ||
11  | Repair the open in CKT 32 between splice S213 and the panel dimmer switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | --  | |
12  | Replace the panel dimmer switch. Is the repair complete?  | --  | --  | |
13  | Repair the open in CKT 44 between the panel dimmer switch and the lamp dimmer module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | --  | |