Center Differential Lock Switch
Start engine and ensure switch is off. Ensure light only illuminates when transfer case shift lever is in "L" position. Ensure light turns off when transfer case shift lever is in "N" or "H" position. Check for continuity between terminals. See Fig 1 and CENTER DIFFERENTIAL LOCK SWITCH CONTINUITY table. If continuity is not as specified, replace switch.
CENTER DIFFERENTIAL LOCK SWITCH CONTINUITY
| Switch Position | Terminals No. | Test Condition |
|---|---|---|
| ON | 1 & 2 | No Continuity |
| ON | 1 & 3 | No Continuity |
| ON | 2 & 3 | Continuity |
| OFF | 1 & 2 | Continuity |
| OFF | 1 & 3 | No Continuity |
| OFF | 2 & 3 | No Continuity |