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EC-402 < DTC/CIRCUIT DIAGNOSIS > [HR16DE] P2100, P2103 THROTTLE CONTROL MOTOR RELAY 2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I 1. Disconnect ECM harness connector. 2. Disconnect IPDM E/R harness connector F115. 3. Check the continuity between ECM harness connector and IPDM E/R harness connector. 4. Also check harness for short to ground and short to power. YES >> GO TO 4. NO >> GO TO 3. 3. DETECT MALFUNCTIONING PART Check the following. • IPDM E/R connector F42 • Harness for open or short between IPDM E/R and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK FUSE 1. Disconnect 20 A fuse (No. 53) from IPDM E/R. 2. Check 20 A fuse for blown. YES >> GO TO 9. NO >> Replace 20 A fuse. 5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I 1. Check voltage between ECM harness connector and ground under the following conditions. Is the inspection result normal? YES >> GO TO 8. NO >> GO TO 6. 6. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Disconnect IPDM E/R harness connector F42. 4. Check the continuity between ECM harness connector and IPDM E/R harness connector. 5. Also check harness for short to ground and short to power. YES >> GO TO 8. NO >> GO TO 7. ECM IPDM E/R Continuity Connector Terminal Connector Terminal F10 15 F42 32 Existed ECM Conditions Voltage + − Connector Terminal Connector Terminal F10 2 E16 108 Ignition switch: OFF Approx. 0 V Ignition switch: ON Battery voltage ECM IPDM E/R Continuity Connector Terminal Connector Terminal F10 2 F42 29 Existed |