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2-7 [T9ROI
FUEL INJECTION SYSTEM
R : TROUBLE CODE (41) - AIR-FUEL RATIO CONTROL SYSTEM -
DIAGNOSIS :
Faulty learning control system
TROUBLE SYMPTOM :
Erroneous idling
Engine stall
1
Check operation of injectors .
Not OK
`
e Check harness connector.
I
Replace fuel injector.
OK
2
Check air flow sensor .
Not OK
`
* Check harness connector.
I
Replace air flow sensor .
OK
Not OK
3
Check water temperature sensor.
0
Replace water temperature sensor .
OK
Not OK
4
Check throttle sensor .
0
Replace throttle body ASSY .
OK
Not OK
5
Check OZ 1 & 2 .
11
Replace 02 1 or 2 .
~r OK
Not OK
6
Check fuel pressure .
Check fuel pump and/or pressure regulator.
OK
Not OK
7
Check injectors.
11
Replace fuel injector .
OK
Not OK
Check contact of ECU connector terminal .
~
1 1 1 0 F
Repair ECU connector .
OK
Replace ECU .
94
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Troubleshooting
