Diagnostic Aids

Check for and repair the following condition(s): Check for faulty connections or damaged harness. Ensure harness is not routed too close to high voltage wires, such as spark plug cables. If connections and harness appear okay, observe ECT display on scan tool while moving all related harnesses and connectors. A change in scan tool display may indicate fault location. Check for MAP signal out of range or faulty MAP sensor by comparing scan tool values of a known-good similar vehicle. If DTC cannot be duplicated, FAILURE RECORDS data can be used in determining vehicle mileage since DTC was last set. If it is determined that DTC occurs intermittently, performing DTC P1122: TP SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE  may isolate cause of fault.