[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - INSPECTION PROCEDURE FOR DIAGNOSIS CODES - DTC P2103: Throttle Valve Control Servo Circuit (Shorted High) | PRINT PAGE / INDEX / PRIOR / NEXT

DTC P2103: Throttle Valve Control Servo Circuit (Shorted High)
OPERATION Controls the current that is applied from the engine-A/T-ECU (terminals No. 133, No. 141) to the electronically controlled throttle valve (terminals No. 1, No. 2).
FUNCTION Engine-A/T-ECU varies the direction and the amperage of the current that is applied to the throttle valve control servo in order to control the opening of the throttle valve.
TROUBLE JUDGMENT Check Condition Battery positive voltage is 8.3 V or higher. Judgement Criteria Throttle actuator control motor current is 8 A or higher for 0.8 second. <Vehicles for Hong kong> Battery voltage short circuit is detected for 0.8 second. <Vehicles except for Hong kong>
PROBABLE CAUSE Failed throttle valve control servo Short circuit in throttle valve control servo circuit or loose connector contact Failed engine-A/T-ECU
| DIAGNOSIS PROCEDURE
| STEP 1. Connector check: B-33 electronically controlled throttle valve connector
| Q: Is the check result normal? YES: Go to Step 2 . NO: Repair.
| STEP 2. Perform resistance measurement at B-33 electronically controlled throttle valve connector.
| Disconnect connector, and measure at electronically controlled throttle valve side. Resistance between terminal No. 1 and No. 2. OK: 0.3 - 80 Ω (at 20 °C) Q: Is the check result normal? YES: Go to Step 3 . NO: Replace the throttle body assembly.
| STEP 3. Connector check: C-138 engine-A/T-ECU connector
| Q: Is the check result normal? YES: Go to Step 4 . NO: Repair.
| STEP 4. Check harness between B-33 (terminal No. 1) electronically controlled throttle valve connector and C-138 (terminal No. 133) engine-A/T-ECU connector.
| Check output line for short circuit. Q: Is the check result normal? YES: Go to Step 5 . NO: Repair.
| STEP 5. Check harness between B-33 (terminal No. 2) electronically controlled throttle valve connector and C-138 (terminal No. 141) engine-A/T-ECU connector.
| Check output line for short circuit. Q: Is the check result normal? YES: Go to Step 6 . NO: Repair.
| STEP 6. Check the trouble symptoms. Q: Is the check result normal? YES: Replace engine-A/T-ECU. NO: Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).

[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - INSPECTION PROCEDURE FOR DIAGNOSIS CODES - DTC P2103: Throttle Valve Control Servo Circuit (Shorted High) | PRINT PAGE / INDEX / PRIOR / NEXT

©2004 Mitsubishi Motors Corporation