IDLE SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTION
EF & EC-28flowchartIdle Mixture Ratio (CO%) Inspection — Continuation from node D
1
D (entry from previous page)
2
Start engine and warm it up until water temperature indicator points to the middle of gauge. (Wait more than 5 minutes after engine starts.)
3
Race engine two or three times under no-load then run engine at idle speed.
4
Check "CO"%. Idle CO: Less than 8%. Make sure engine runs smoothly. After checking CO%: 1) Disconnect the resistor from terminals of engine temperature sensor harness connector. 2) Connect engine temperature sensor harness connector to engine temperature sensor. 3) Connect A.A.C. valve harness connector.
5
N.G. / O.K.
N.G.
Connect exhaust gas sensor harness connector.
Connect exhaust gas sensor harness connector.
Replace air flow meter.
B (exit to next section)
O.K.
6
Replace exhaust gas sensor and make sure that inspection lamp (Green) on control unit goes on and off more than 9 times during 10 seconds. (2,000 rpm)
7
N.G. / O.K.
O.K.
return to step 9
N.G.
8
Replace E.C.U.
9
B (exit to next section)
| Specification | Value |
|---|---|
| Idle COEngine at idle speed, warmed up | Less than 8% |
| Inspection lamp (Green) on/off cycles2,000 rpm, after replacing exhaust gas sensor | More than 9 times during 10 secondscycles/10 sec |
Idle COEngine at idle speed, warmed up
Less than 8%
Inspection lamp (Green) on/off cycles2,000 rpm, after replacing exhaust gas sensor
More than 9 times during 10 secondscycles/10 sec