AFTER WARMING UP, IDLE SPEED IS ABOVE SPECIFICATIONS WITHOUT LOAD (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. APP Sensor Signal Inspection
Also check for
Intake air leaks
AFTER WARMING UP, IDLE SPEED IS BELOW SPECIFICATIONS WITHOUT LOAD (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. Throttle Body Carbon Accumulation Check
Also check for
Incorrect valve timing or clearance adjustment
COLD FAST IDLE TOO HIGH (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. PCM Idle Learn Procedure
2. Idle Speed Inspection
Also check for
Intake air leaks
COLD FAST IDLE TOO LOW (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. PCM Idle Learn Procedure
2. Idle Speed Inspection
3. Throttle Body Carbon Accumulation Check
DIFFICULT TO REFUEL (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
Also check for
Malfunctioning gas station filling nozzle
ENGINE IS HARD TO START (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. Engine starts but stalls immediately (MIL works OK, no DTCs set, immobilizer indicator stays on or flashes) (KA/KC)
ENGINE STALLS (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. Fuel And Emissions Systems Symptom Troubleshooting - Engine Stalls or Fuel And Emissions Systems Symptom Troubleshooting - Engine Will Not Start, Engine Starts But Stalls Immediately, Or Engine Is Hard To Start
ENGINE STARTS BUT STALLS IMMEDIATELY (MIL WORKS OK, NO DTCS SET, IMMOBILIZER INDICATOR STAYS ON OR FLASHES) (KA/KC)
Diagnostic procedure
Check the immobilizer system.
ENGINE WILL NOT START (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. Fuel And Emissions Systems Symptom Troubleshooting - Engine Will Not Start, Engine Starts But Stalls Immediately, Or Engine Is Hard To Start
ENGINE WILL NOT START (MIL WORKS OK, NO DTCS SET, IMMOBILIZER INDICATOR STAYS ON OR FLASHES) (KA/KC)
Diagnostic procedure
Check the immobilizer system.
Symptom Troubleshooting Using The Immobilizer Indicator Lighting Pattern
ENGINE WILL NOT START AND HDS DOES NOT COMMUNICATE WITH THE PCM(MIL COMES ON AND STAYS ON, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. PCM Power and Ground Circuit Troubleshooting
HDS DOES NOT COMMUNICATE WITH THE PCM OR THE VEHICLE(KA/KC)
Diagnostic procedure
1. DLC Circuit Troubleshooting
Also check for
Correct HDS software
IDLE SPEED FLUCTUATES (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. PCM Idle Learn Procedure
2. Idle Speed Inspection
3. Throttle Body Carbon Accumulation Check
4. A/C Signal Circuit Troubleshooting (Ka)
5. Check
NOTE: Turning the A/C to ON under the conditions that the A/C refrigerant amount is out of specification (excessive or too little) may cause the idle speed fluctuation.
Also check for
LOW POWER (MIL WORKS OK, NO DTCS SET) (KA/KC)
Diagnostic procedure
1. Fuel Pressure Test
Also check for
MIL COMES ON AND STAYS ON, OR NEVER COMES ON AT ALL, NO DTCS SET (KA/KC)
Diagnostic procedure
1. MIL Circuit Troubleshooting