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EC9-340 < DTC/CIRCUIT DIAGNOSIS > [R9M] P1642 THERMOPLUNGER CONTROL UNIT Is the inspection result normal? YES >> GO TO 4. NO >> Perform trouble diagnosis for battery power supply circuit. 4. CHECK THERMOPLUNGER CONTROL UNIT REFERENCE VALUE-1 Check the thermoplunger control unit reference value (thermoplunger control unit side). Refer to . Is the inspection result normal? YES >> GO TO 6. NO >> GO TO 5. 5. CHECK THERMOPLUNGER CONTROL UNIT CIRCUIT-1 Check the thermoplunger control unit circuit for open and short. Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-41, "Intermittent Incident" . NO >> Repair or replace error-detected parts. 6. CHECK THERMOPLUNGER CONTROL UNIT REFERENCE VALUE-2 Check the thermoplunger control unit reference value (ECM side). Refer to Is the inspection result normal? YES >> GO TO 8. NO >> GO TO 7. 7. CHECK THERMOPLUNGER CONTROL UNIT CIRCUIT-2 Check the thermoplunger control unit circuit for open and short. Is the inspection result normal? YES >> Replace thermoplunger control unit. NO >> Repair or replace error-detected parts. 8. CHECK THERMOPLUNGER Check thermoplunger. Refer to EC9-341, "Component Inspection" . Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-41, "Intermittent Incident" . NO >> Replace malfunctioning thermoplunger. + - Continuity ECM Thermoplunger control unit Connector Terminal Connector Terminal F82 46 F66 8 Existed 50 1 57 2 63 7 76 3 + - Continuity ECM Thermoplunger control unit Connector Terminal Connector Terminal F82 46 F66 8 Existed 50 1 57 2 63 7 76 3 |