DTC P1294: Target Idle Not Reached (2.4L): Testing

Turn ignition on. Using scan tool, read DTCs. If Good Trip counter is displayed for DTC P1294 and displayed count is "0", go to next step. If Good Trip counter for DTC P1294 is not displayed or displayed count is not "0", go to step 10.
Start engine and allow engine to idle for 60 seconds. With engine idling, use scan tool in SYSTEM TESTS and perform IAC WIGGLE test. Engine speed should increase and decrease in accordance with display on scan tool. If engine speed operates correctly, stop IAC wiggle test, and go to next step. If engine speed does not operate correctly, go to step 6.
Check engine vacuum hoses and components for vacuum leaks. Ensure proper PCV valve is installed and PCV valve is operating correctly. If no vacuum leaks exist, correct PCV valve is used and PCV valve is operating correctly, go to next step. If vacuum leaks exist, incorrect PCV valve is used or PCV valve is not operating correctly, repair as necessary.
Turn ignition off. Check air induction system for dirty air filter and for any foreign material blocking air intake tube. Check for air leaks at air intake tube connections and air filter housing. Repair air induction system as necessary. If air induction system is okay, go to next step.
Ensure throttle plate is fully closed against stop. Ensure throttle plate and linkage are not binding and no carbon build-up is present on throttle plate. Repair throttle plate and linkage as necessary. If throttle plate and linkage are okay, no problems are indicated at this time. Test is complete.
Turn ignition off. Disconnect Idle Air Control (IAC) motor 4-pin connector. Start engine and allow it to idle. Using a test light connected to ground, probe IAC motor No. 1 driver circuit (Violet/Dark Green wire) at IAC motor harness connector for 10 seconds. Repeat test for remaining wires at IAC motor harness connector. Test light should flash on and off at each wire. If test light operates as specified, go to next step. If test light does not operate as specified, go to step 8.
Ensure IAC motor is disconnected and engine is idling. Using a test light connected to positive battery voltage, probe IAC motor No. 1 driver circuit (Violet/Dark Green wire) at IAC motor harness connector for 10 seconds. Repeat test for remaining wires at IAC motor harness connector. Test light should flash on and off at each wire. If test light operates as specified, replace IAC motor. If test light does not operate as specified, replace PCM. Program the new PCM. See PROGRAMMING .

Turn ignition off. Ensure IAC motor is disconnected. Disconnect PCM connectors. PCM is located in left side of engine compartment, in front of battery. Measure resistance of driver circuit between IAC motor harness connector and PCM harness connector that test light did not flash on and off in step 6. See IDLE AIR CONTROL MOTOR DRIVER CIRCUIT IDENTIFICATION table. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in appropriate IAC driver circuit.

IDLE AIR CONTROL MOTOR DRIVER CIRCUIT IDENTIFICATION

IAC Motor Driver No.

⁽¹⁾ PCM Terminal No. (Wire Color)

IAC Motor Harness Connector Terminal No.

57 (Violet/Dark Green)

49 (Violet/Light Green)

48 (Brown/Light Green)

58 (Brown/Dark Green)

⁽¹⁾	Measure at PCM C2 harness connector.

At this time, PCM is assumed to be defective. Replace PCM. Program the new PCM. See PROGRAMMING .
Start engine and allow engine to idle for 60 seconds. With engine idling, use scan tool in SYSTEM TESTS and perform IAC WIGGLE test. Engine speed should increase and decrease in accordance with display on scan tool. If engine speed operates correctly, stop IAC wiggle test, and go to next step. If engine speed does not operate correctly, check IAC motor. See appropriate SYSTEM & COMPONENT TESTING article.
At this time, conditions for DTC to set do not exist or fault is an intermittent problem. Start engine and allow it to idle. Ensure engine is at normal operating temperature. Using scan tool, monitor parameters related to DTC while wiggling connectors and wiring harness. If value changes while wiggling connectors and wiring harness, repair connectors and wiring harness where wiggling caused value to change. If value does not change, review Freeze Frame data using scan tool. Attempt to duplicate condition that caused DTC to set. Check for any related technical service bulletins that may apply. Visually inspect related connectors and wiring harness. Repair connectors and wiring harness as necessary. See WIRING DIAGRAMS article. If no problems are indicated, test is complete.