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7B-39 Air Conditioning System: DTC B1504: Sunload Sensor and/or Its Circuit Malfunction S6JB0A7204014 Wiring Diagram DTC Detecting Condition and Trouble Area DTC Confirmation Procedure 1) Connect scan tool to DLC with ignition switch turned OFF. DTC Troubleshooting 5V PNK YEL G52-18 G52-12 [A] 2 1 12 18 I5JB0A720022-01 [A]: HVAC control module connector “G52” (harness side view) 1. HVAC control module 2. Sunload sensor DTC Detecting Condition Trouble Area Sunload sensor signal voltage is more than or less than specified value for • Sunload sensor circuit Step Action Yes No 1 Sunload sensor power supply circuit check switch turned OFF. 2) Check for proper connection to sunload sensor at “PNK” and “YEL” wire terminals. 3) If OK, measure voltage between “PNK” wire terminal of sunload sensor connector and vehicle body ground with Is voltage 4 – 6 V? Go to Step 5. Go to Step 2. 2 Sunload sensor power supply circuit check ignition switch turned OFF. 2) Check for proper connection to HVAC control module connector at “G52-12” and “G52-18” terminals. 3) If OK, measure resistance between “PNK” wire terminal of sunload sensor connector and “G52-12” terminal of Is resistance below 5 Ω ? Go to Step 3. “PNK” wire open or high 3 Sunload sensor power supply circuit check sunload sensor connector and vehicle body ground. Is resistance infinity? Go to Step 4. “PNK” wire shorted to 4 Sunload sensor power supply circuit check sunload sensor connector and vehicle body ground with Is voltage 0 V? Go to Step 5. “PNK” wire shorted to |