[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - INSPECTION PROCEDURE FOR DIAGNOSIS CODES - Code No. P2126: Accelerator Pedal Position Sensor (Sub) Circuit Range/Performance Problem <Vehicles except for Australia, South africa and Hong kong> | PRINT PAGE / INDEX / PRIOR / NEXT

Code No. P2126: Accelerator Pedal Position Sensor (Sub) Circuit Range/Performance Problem <Vehicles except for Australia, South africa and Hong kong>
OPERATION Refer to Code No. P2127 Accelerator Pedal Circuit Position Sensor (sub) Circuit . Refer to Inspection Procedure 32: Accelerator Pedal Position Switch Circuit .
FUNCTION Engine-A/T-ECU checks the accelerator pedal position sensor (sub) output signal characteristics for abnormal conditions.
TROUBLE JUDGMENT Check Conditions Ignition switch is in "ON" position Closed throttle position switch: ON Accelerator pedal position sensor (main) failure is detected. Judgment Criterion Accelerator pedal position sensor (sub) output voltage is 2.5 V or higher for 1 second.
PROBABLE CAUSE Failed accelerator pedal position sensor Open/short circuit in accelerator pedal position sensor circuit or loose connector contact Failed accelerator pedal position switch Open/short circuit in accelerator pedal position switch circuit or loose connector contact Failed engine-A/T-ECU
| DIAGNOSIS PROCEDURE
| STEP 1. Connector check: B-124 accelerator pedal position sensor connector
| Q: Is the check result normal? YES: Go to Step 2 . NO: Repair.
| STEP 2. Check accelerator pedal position sensor itself. Check accelerator pedal position sensor itself (Refer to ). Q: Is the check result normal? YES: Go to Step 3 . NO: Replace accelerator pedal position sensor.
| STEP 3. Perform resistance measurement at B-124 accelerator pedal position sensor connector.
| Disconnect connector, and measure at harness side. Resistance between terminal No. 7 and earth. OK: 2 Ω or less Q: Is the check result normal? YES: Go to Step 7 . NO: Go to Step 4 .
| STEP 4. Connector check: C-137 engine-A/T-ECU connector
| Q: Is the check result normal? YES: Go to Step 5 . NO: Repair.
| STEP 5. Check harness between B-124 (terminal No. 7) accelerator pedal position sensor connector and C-137 (terminal No. 96) engine-A/T-ECU connector.
| Check earthing line for damage. Q: Is the check result normal? YES: Go to Step 6 . NO: Repair.
| STEP 6. Check the trouble symptoms. Q: Does trouble symptom persist? YES: Replace engine-A/T-ECU. NO: Intermittent malfunction (Refer to GROUP 00 - How to Use Trouble shooting/Inspection Service Points ).
| STEP 7. Check accelerator pedal position switch itself. Check accelerator pedal position switch itself (Refer to ). Q: Is the check result normal? YES: Go to Step 8 . NO: Replace accelerator pedal position sensor.
| STEP 8. Connector check: C-135 engine-A/T-ECU connector
| Q: Is the check result normal? YES: Go to Step 9 . NO: Repair.
| STEP 9. Check harness between B-124 (terminal No. 4) accelerator pedal position sensor connector and C-135 (terminal No. 38) engine-A/T-ECU connector.
| Check power supply line for short circuit. Q: Is the check result normal? YES: Go to Step 6 . NO: Repair.

[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - INSPECTION PROCEDURE FOR DIAGNOSIS CODES - Code No. P2126: Accelerator Pedal Position Sensor (Sub) Circuit Range/Performance Problem <Vehicles except for Australia, South africa and Hong kong> | PRINT PAGE / INDEX / PRIOR / NEXT

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