|
|
Content .. 1180 1181 1182 1183 ..
• When Monitored: • Set Condition: Possible Causes THROTTLE PLATE STUCK (K124) ETC POSITIVE CIRCUIT OPEN (K126) ETC NEGATIVE CIRCUIT OPEN (K124) ETC POSITIVE CIRCUIT SHORTED TO GROUND (K126) ETC NEGATIVE CIRCUIT SHORTED TO GROUND ETC MOTOR 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. In the Freeze Frame data, look at the temperature at which the fault occurred. If it occurred in extreme cold tem- NOTE: Diagnose any TP Sensor faults, 5-Volt Supply faults, and Battery Voltage High or Low DTCs before 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) 2. THROTTLE PLATE STUCK Turn the ignition off. Remove the Air Cleaner Assembly from the Throttle Body. Check for any signs of a foreign material (ice or dirt) causing the Throttle to stick. Manually open and close the throttle plate using your hands. Does the Throttle Plate move? Yes >> Go To 3 No >> Remove the debris if possible or replace the Throttle Body Assembly if signs of physical damage are present. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is com- Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 752 ENGINE ELECTRICAL DIAGNOSTICS LX |