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P2138-ACCELERATOR PEDAL POSITION SENSOR 1/2 CORRELATION (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes EXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT EXCESSIVE RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT EXCESSIVE RESISTANCE IN THE (K167) SENSOR NO.1 RETURN CIRCUIT EXCESSIVE RESISTANCE IN THE (K400) SENSOR NO.2 RETURN CIRCUIT EXCESSIVE RESISTANCE IN THE (K23) APP SENSOR NO.1 SIGNAL CIRCUIT EXCESSIVE RESISTANCE IN THE (K29) APP SENSOR NO.2 SIGNAL CIRCUIT APP SENSOR PCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. NOTE: Repair any other 5-Volt Supply or APPS High and Low DTCs before diagnosing P2138. Is the DTC active at this time? Yes >> Go To 2 No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 902 ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L DR/DH |