ENGINE On-vehicle Service
NOTE
1.
Ignition timing is variable within about even under
operating.
2. And it is automatically further advanced by about
from BTDC at higher altitudes.
CURB IDLE SPEED CHECK
1. Before inspection and adjustment, set vehicles in the
following condition.
l
Engine coolant temperature:
l
Lights, electric cooling fan and all accessories: OFF
l
Transaxle: Neutral (P range on vehicles with
2. Turn the ignition switch to OFF and connect the scan
tool to the data link connector.
3. Select No. 17 of the SCAN TOOL ACTUATOR TEST.
4. Check the basic ignition timing.
Standard BTDC
5. Run the engine at idle for 2 minutes.
6. Select No. 22 of the SCAN TOOL DATA LIST.
7. Check the curb idle speed.
Standard value: 750 100
NOTE
The idle speed is controlled automatically by the idle air
control system.
8. If the idle speed is outside the standard value, inspect
the components by referring to GROUP Trou-
bleshooting.
IDLE MIXTURE CHECK
.
1.
Before inspection, set in following
l
Engine coolant temperature:
l
Lights, electric cooling fan all
l
Transaxle: Neutral (P range on
2. Turn the ignition switch to OFF and, connect the scan
tool to the data link
,
3. Select No. 17 of the SCAN TOOL
4.
Check that the basic ignition
value.
Standard value: BTDC
5. Run the engine 2,500 for 2 minutes.
6. Set the CO, HC tester.
7. Check the CO contents and the HC contents, at idle.
Standard value:
CO contents: 0.5% or less
HC contents: 100 rpm or less
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