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A/C-Heater Control Unit

NOTE: Control unit testing is limited to voltage and ground tests.
  1. Disconnect electrical harness connector from control unit and turn ignition on. Using a DVOM connected to ground, check for battery voltage at terminal No. 2 (Green/White wire). If voltage is not present, check fuse No. 6. Replace fuse if blown.
  2. Using a DVOM, test for ground at terminal No. 3 (Brown wire) from ground terminal above brake pedal. If no fault is found, replace A/C-heater control unit. See A/C-HEATER CONTROL UNIT  under REMOVAL & INSTALLATION.
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