Defogger Switch Circuit
Inspect the defogger switch in the A/C control assembly circuit. Disconnect the connector from the A/C control assembly and inspect the connector on the wire harness side. See INSPECTING DEFOGGER SWITCH CIRCUIT table. See CONNECTOR IDENTIFICATION . If the circuit is not as specified, replace the switch. See DEFOGGER SWITCH under REMOVAL & INSTALLATION.
INSPECTING DEFOGGER SWITCH CIRCUIT
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| B10 - Ground | Constant | Continuity |
| A1 - Ground | Constant | Battery Voltage |
| A2 - Ground | Ignition Switch LOCK | No Voltage |
| A2 - Ground | Ignition Switch ACC Or ON | Battery Voltage |