Note. Information marked with an asterisk (*) applies to '02-03 models. Information marked with an asterisk (**) applies to '04-05 models.
- Reset the ECM (see «HOW TO RESET THE ECM»(ref-171994-S27513286122005021700000) ).
- Start the engine. Hold the engine at 3,000 RPM with no load (in neutral) until the radiator fan comes on, then let it idle.
- Test-drive with the transmission in 4th gear.
- Accelerate for 5 seconds using wide open throttle.
- Check for a Temporary DTC with the HDS or a scan tool. Is Temporary DTC P1106* (P2227)** indicated? YES: Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck (see «ECM UPDATING AND SUBSTITUTION FOR TESTING»(ref-171994-S19233909092005021700000) ). If the symptom/indication goes away with a known-good ECM, replace the original ECM. NO: Intermittent failure, system is OK at this time.