Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection — Idle check and procedure (Cont'd)
EF & EC-395flowchartIdle CO target: less than 10%. Diagnostic connector for CONSULT: connect CHK and IGN terminals. Page is in the SR tab of the EF & EC section.
CO check and exhaust gas sensor re-check (Cont'd)
1
D
2
Race engine two or three times under no-load, then run engine at idle speed.
3
Check "CO" %.
Idle CO: Less than 10%
4
After checking CO%,
1) Touch "BACK".
or
1) Disconnect the resistor from terminals of engine temperature sensor harness connector.
2) Connect engine temperature sensor harness connector to engine temperature sensor.
O.K.
F
N.G.
5
Replace exhaust gas sensor.
6
1. See "M/R F/C MNT" in "Data monitor" mode.
2. Maintaining engine at 2,000 rpm under no-load (engine is warmed up sufficiently.), check that the monitor fluctuates between "LEAN" and "RICH" more than 5 times during 10 seconds.
RICH → LEAN → RICH → : 1 time, 2 times ... LEAN → RICH .....
same as step 4
OR
7
1. Set "Exhaust gas sensor monitor" in the self-diagnostic mode II. (See page EF & EC-412.)
2. Maintaining engine at 2,000 rpm under no-load, check to make sure that the RED L.E.D. on the E.C.U. or the check engine light on the instrument panel goes ON and OFF more than 5 times during 10 seconds.
8
G