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6E–137 ENGINE DRIVEABILITY AND EMISSIONS Disconnect the component while observing the TP disconnected, replace the component that affected DTC P0123 – TP Sensor Circuit High Voltage
Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to OBD System Check 2 1. Ignition “ON,” engine “OFF.” display on the Tech 2. Is the “TP Sensor” above the specified value? 4.88 V Go to Step 4 Go to Step 3 3 1. Ignition “ON,” engine “OFF.” conditions as noted. 4. Using a Tech 2, monitor “Specific DTC” info for DTC P0123. Does the Tech 2 indicate DTC P0123 failed. — Go to Step 4 Refer to Diagnostic Aids 4 1. Disconnect the TP sensor electrical connector. Is the “TP Sensor” near the specified value? 0 V Go to Step 5 Go to Step 6 5 Probe the sensor ground circuit at the TP sensor Is the test light “ON?” — Go to Step 7 Go to Step 10 6 1. Ignition “OFF,” disconnect the PCM. circuit. 4. If the TP sensor signal circuit is shorted, repair it as necessary. Was the TP sensor signal circuit shorted? — Verify repair Go to Step 12 7 1. Ignition “ON.” disconnecting each of the components that share 3. If the “TP Sensor” Tech 2 display changes, replace the component that caused the display to change Does disconnecting any of these components cause — Verify repair Go to Step 8 8 1. Ignition “OFF,” disconnect the PCM. circuit. 4. If the 5 volt reference “A” circuit is shorted, repair it as necessary. Was the 5 volt reference “A” circuit shorted? — Verify repair Go to Step 9 9 Check for poor electrical connections at the TP sensor Did any terminals require replacement? — Verify repair Go to Step 11 |