Check voltage between terminal IDH of AC amplifier and body ground

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PREPARATION:

Disconnect the connector from A/C amplifier. CHECK:

Turn the ignition switch ON.

Turn the light control switch OFF.

Turn the rear defogger switch OFF.

Measure voltage between terminal IDH of A/C amplifier on wire harness side connector.

Voltage: Below 1.0 V

I18158

I18398

Check and replace converter.

PTC Heater Circuit (Quick Heater)

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