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COOLING FAN EC-427 < DTC/CIRCUIT DIAGNOSIS > [HR16DE] C D E F G H I J K L M A EC N P O YES >> Replace IPDM E/R. Refer to PCS-30, "Removal and Installation" (WITH I-KEY) or (WITHOUT I-KEY). NO >> Repair or replace harness or connector. EXCEPT FOR SINGLE CONNECTOR COOLING FAN WITHOUT A/C MODELS 1. CHECK COOLING FAN MOTOR CIRCUIT 1. Disconnect cooling fan motor harness connector. 2. Check the continuity between IPDM E/R harness connector and cooling fan motor harness connector. For single connector cooling fan with A/C For Dual connector cooling fan 3. Check the continuity between cooling fan relay harness connector and cooling fan motor harness connec- tor. For single connector cooling fan with A/C models For Dual connector cooling fan models 4. Check the continuity between cooling fan motor harness connector and ground. For single connector cooling fan with A/C models For Dual connector cooling fan models 5. Also check harness for short to ground and short to power. YES >> GO TO 2. NO >> Repair open circuit or short to ground or short to power in harness or connectors. 2. CHECK COOLING FAN RELAY CIRCUIT 1. Disconnect cooling fan relay harness connector. 2. Disconnect IPDM E/R harness connector. 3. Check the continuity between IPDM E/R harness connector and cooling fan relay harness connector. IPDM E/R Cooling fan motor Continuity Connector Terminal Connector Terminal E43 7 E31 2 Existed 5 1 IPDM E/R Cooling fan motor Continuity Connector Terminal Connector Terminal E43 7 E5 1 Existed 5 E32 3 Cooling fan relay Cooling fan motor Continuity Connector Terminal Connector Terminal E62 5 E31 4 Existed Cooling fan relay Cooling fan motor Continuity Connector Terminal Connector Terminal E62 5 E32 4 Existed Cooling fan motor Ground Continuity Connector Terminal E31 3 Ground Existed Cooling fan motor Ground Continuity Connector Terminal E5 2 Ground Existed |