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(P0480) COOLING FAN CONTROL CIRCUIT (CONTINUED) When Monitored and Set Condition • When Monitored: With the engine running. • Set Condition: When Engine Coolant temperature is less than 70°C (158°F) and the Powertrain Control Module POSSIBLE CAUSES FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN RADIATOR FAN CONTROL CIRCUIT OPEN RADIATOR FAN CONTROL CIRCUIT SHORT TO GROUND RADIATOR FAN CONTROL CIRCUIT SHORT TO VOLTAGE RADIATOR FAN CONTROL MODULE POWERTRAIN CONTROL MODULE For a complete Powertrain Control Module Circuit Diagram,(Refer to 9 - ENGINE - SCHEMATICS AND DIA- Diagnostic Test 1. PRE-DIAGNOSTIC CHECK OUT Note: Always perform diagnostics with a fully charged battery. Note: Check connectors — Clean/repair as necessary. Poor pin to Note: Check for applicable TSBs related to the problem. With the DRB III T , read PCM DTCs. Using the wiring diagram/schematic as a guide, inspect the wiring and Perform this procedure prior to symptom diagnosis. Continue Go To 2 ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 493 |