|
|
EC9-336 < DTC/CIRCUIT DIAGNOSIS > [R9M] P1641 THERMOPLUNGER CONTROL UNIT P1641 THERMOPLUNGER CONTROL UNIT DTC Logic INFOID:0000000010309337 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON at least 2 seconds. 2. Check DTC. Is DTC detected? YES >> Proceed to EC9-336, "Diagnosis Procedure" . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000010309338 1. CHECK ECM HARNESS CONNECTOR CONNECTION 1. Turn ignition switch OFF. 2. Check the ECM harness connector connection. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. CHECK THERMOPLUNGER CONTROL UNIT HARNESS CONNECTOR CONNECTION Check the thermoplunger control unit harness connector connection. YES >> GO TO 3. NO >> Repair or replace error-detected parts. 3. CHECK THERMOPLUNGER CONTROL UNIT POWER SUPPLY Check the thermoplunger control unit power supply. DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P1641 THMPR 1 RLY C/CIR NAL • CC.0: SHORT CIRCUIT TO EARTH • CC.1: SHORT-CIRCUIT TO +12V • CO: OPEN CIRCUIT • ECM detects thermoplunger control unit cir- cuit is open circuit. • ECM detects thermoplunger control unit cir- cuit is short circuit to ground. • ECM detects thermoplunger control unit cir- cuit is short circuit to battery. • Harness or connectors (Thermoplunger control unit circuit • Thermoplunger control unit + - Voltage Thermoplunger control unit Connector Terminal F66 4 Ground Battery voltage 5 |