STEP 1. Check A/C control panel connector C-216 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
STEP 2. Measure the voltage at A/C control panel connector C-216.
(1) Disconnect A/C control panel connector C-216, and measure the voltage at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 20 and ground.- The measured value should be approximately 12 volts (battery positive voltage).
Is the measured voltage approximately 12 volts?
Go to Step 4. Go to Step 3.
STEP 3. Check the wiring harness between A/C control panel connector C-216 (terminal 20) and ETACS-ECU connector C-417 (terminal 5).
STEP 4. Measure the resistance at A/C control panel connector C-216.
STEP 5. Check grounding connector C-01 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
STEP 6. Check the wiring harness between A/C control panel connector C-216 (terminal 9) and grounding connector C-01 (terminal 6).