BE–64 BODY ELECTRICAL SYSTEM – DEFOGGER SYSTEM TROUBLESHOOTING The table below will be useful for you in troubleshooting these electrical problems. The most likely causes of the malfunction are shown in the order of their probability. Inspect each part in the order shown, and replace the part when it is found to be faulty. Trouble | Parts name | (See page) All defogger systems do not operate 1. GAUGE Fuse (BE–6) 2. DEFOG Fuse (BE–6) 3. Defogger Relay (BE–65) 4. Defogger Switch (BE–64) 5. A/C Amplifier (AC Section) 6. Wire Harness Rear window defogger does not operate 1. Defogger Wires (BE–65) 2. Wire Harness Mirror defogger does not operate 1. MIR–HTR Fuse (BE–6) 2. Mirror Defogger (BE–66) 3. Wire Harness Connector B Connector A 10 7 ND8876 DEFOGGER SWITCH INSPECTION INSPECT SWITCH OPERATION (a) Connect the positive (+) lead from the voltmeter to terminal 7 of connector B and the negative (–) lead from voltmeter to terminal 10 of connector B. (b) When the switch is off, the voltage should be approx. 12 V. REAR ON ND8877 (c) When the switch is on, check that the indicator light lights up and that the voltage is less than 1 V. (d) After 15 minutes, check that the switch is off and the voltage is approx. 12 V. A/C AMPLIFIER INSPECTION See A/C section