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4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS 6E–251 Diagnostic Trouble Code (DTC) P1120 (Symptom Code D) (Flash Code 21) Pedal/Throttle Position Sensor Brake Switch Error Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to On Board Diagnostic (OBD) System Check 2 1. Connect the Tech 2. 2. Review and record the failure information. 3. Select “F0: Read DTC Infor As Stored By ECU” in “F0: Diagnostic Trouble Codes”. Is the DTC P1120 (Symptom Code D) stored as — Go to Step 3 Refer to Diagnostic Aids and Go to Step 3 3 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Select “F1: Clear DTC Information” in “F0: Diagnostic Trouble Codes” with the Tech 2 and 3. Operate the vehicle and monitor the “F0: Read DTC Infor As Stored By ECU” in the “F0: Was the DTC P1120 (Symptom Code D) stored in this — Go to Step 4 Refer to Diagnostic Aids and Go to Step 4 4 Visually check the TPS. • Accelerator pedal sticking. — Verify repair Go to Step 5 5 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Monitor the “Throttle Position” in the data display. Does the Tech 2 indicate correct “Throttle Position” — Go to Step 7 Go to Step 6 6 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Monitor the “Throttle Position” in the data display. 3. Adjust the TPS within 0% to 100%. Was the problem solved? — Verify repair Go to Step 11 7 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Monitor the “Brake Switch 1” and “Brake Switch 2” in the data display. Does the Tech 2 indicate “Inactive” when the brake — Go to Step 13 Go to Step 8 8 Adjust the brake switch. — Verify repair Go to Step 9 9 Substitute a known good brake switch and recheck. — Go to Step 10 Go to Step 13 10 Replace the brake switch. — Verify repair — 11 Substitute a known good TPS and recheck. — Go to Step 12 Go to Step 13 12 Replace the TPS. — Verify repair — |