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Home >> Suzuki >> 1987 >> Samurai Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Heater And Ventilation) >> Diagnostic Information and Procedures >> DTC P0645, P0646, or P0647 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a scan tool.
  2. Ignition ON with the engine OFF, command the A/C Relay ON and OFF in the ECM Special Functions scan tool data list.
  3. Feel/listen for the A/C relay to click. Observe the scan tool A/C Relay Circuit Status function or A/C relay solenoid turns on and off clicks.
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