Symptom
Diagnostic procedure
Also check for
11-14
Fuel and Emissions Systems
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Low power
(MIL works OK, no DTCs set)
Check the fuel pressure (see page 11-325).
Low compression
Incorrect camshaft
timing
Incorrect engine oil
level
Exhaust restriction
Engine stalls
(MIL works OK, no DTCs set)
1.
2.
3.
4.
Do the ECM/PCM idle learn procedure (see page
11-310).
Check the fuel pressure (see page 11-325).
Check the idle speed (see page 11-309).
Troubleshoot the brake pedal position switch signal
circuit (see page 11-308).
Intake air leaks
Faulty harness and
sensor
connections
Fuel contamination
Difficult to refuel
(MIL works OK, no DTCs set)
1.
2.
3.
Check the fuel vent tube between the EVAP canister
and the fuel tank.
Check the fuel tank vapor recirculation tube between
the fuel pipe and the fuel tank.
Replace the fuel tank (see page 11-339).
Malfunctioning gas
station filling
nozzle.
Filler neck
restriction
Faulty fuel tank
vapor control valve
Fuel overflows during
refueling
(No DTCs set)
Replace the fuel tank (see page 11-339).
Malfunctioning gas
station filling nozzle.
HDS does not communicate
with the ECM/PCM or the
vehicle
Troubleshoot the DLC circuit (see page 11-204).
Fuel cap warning message
stays on
(MIL works OK, no DTCs set)
(K20Z3 engine)
Troubleshoot the fuel cap warning message system
(see page 11-405).
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