Unable to start
(Engine does not turn over) |
- Test the battery. (Refer to
"BATTERY
")
- Test the starter. (Refer to
"STARTER
")
- Inhibitor switch (A/T) or clutch start switch (M/T)
|
|
Unable to start
(Incomplete combustion) |
- Test the battery.
(Refer to
"BATTERY
")
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Check the ignition circuit.
(Refer to
"IGNITION SYSTEM
")
- Troubleshooting the immobilizer system.
(Refer to
"IMMOBILIZER SYSTEM
")
(In case of immobilizer lamp flashing)
|
- DTC
- Low compression
- Intake air leaks
- Slipped or broken timing belt
- Contaminated fuel
|
| Difficult to start |
- Test the battery.
(Refer to
"BATTERY
")
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Check the ECT sensor and circuit (Check DTC)
- Check the ignition circuit.
(Refer to
"IGNITION SYSTEM
")
|
- DTC
- Low compression
- Intake air leaks
- Contaminated fuel
- Weak ignition spark
|
Poor idling
(Rough, unstable or incorrect Idle) |
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Check the Injector.
(Refer to
"INJECTOR
")
- Check the long term fuel trim and short term fuel trim
(Refer to CUSTOMER DATASTREAM)
- Check the idle speed control circuit (Check DTC)
- Inspect and test the Throttle Body
- Check the ECT sensor and circuit (Check DTC)
|
- DTC
- Low compression
- Intake air leaks
- Contaminated fuel
- Weak ignition spark
|
| Engine stall |
- Test the battery.
(Refer to
"BATTERY
")
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Check the idle speed control circuit (Check DTC)
- Check the ignition circuit.
(Refer to
"IGNITION SYSTEM
")
- Check the CKPS Circuit (Check DTC)
|
- DTC
- Intake air leaks
- Contaminated fuel
- Weak ignition spark
|
Poor driving
(Surge) |
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Inspect and test Throttle Body
- Check the ignition circuit.
(Refer to
"IGNITION SYSTEM
")
- Check the ECT Sensor and Circuit (Check DTC)
- Test the exhaust system for a possible restriction.
(Refer to
"EXHAUST MANIFOLD
")
- Check the long term fuel trim and short term fuel trim.
(Refer to CUSTOMER DATASTREAM)
|
- DTC
- Low compression
- Intake air leaks
- Contaminated fuel
- Weak ignition spark
|
| Knocking |
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Inspect the engine coolant. (
"RADIATOR
")
- Inspect the radiator and the electric cooling fan.
(
"RADIATOR
")
- Check the spark plugs.
(Refer to
"IGNITION SYSTEM
")
|
|
| Poor fuel economy |
- Check customer's driving habits
- A/C on full time or the defroster mode on?
- Are tires at correct pressure?
- Is excessively heavy load being carried?
- Is acceleration too much, too often?
- Check the fuel pressure.
(Refer to
"FUEL PRESSURE TEST
")
- Check the injector.
(Refer to
"INJECTOR
")
- Test the exhaust system for a possible restriction
- Check the ECT sensor and circuit
|
- DTC
- Low compression
- Intake air leaks
- Contaminated fuel
- Weak ignition spark
|
Hard to refuel
(Overflow during refueling) |
- Test the canister close valve.
(Refer to
"CANISTER CLOSE VALVE
)
- Inspect the fuel filler hose/pipe
- Pinched, kinked or blocked?
- Filler hose is torn
- Inspect the fuel tank vapor vent hose between the EVAP. canister and air filter
- Check the EVAP. canister
|
- Malfunctioning gas station filling nozzle (If this problem occurs at a specific gas station during refueling)
|