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16 CHECK IGNITION TIMING
Without CONSULT-II
1. Warm up engine to normal operating temperature.
2. Stop engine and disconnect throttle position sensor harness connector.
SEF975R
3. Start engine.
4. Check ignition timing at idle using a timing light.
SEF984U
Ignition timing: 10°±2° BTDC
OK or NG
OK 䊳 GO TO 17.
NG 䊳 1. Adjust ignition timing by turning distributor. Refer to “Idle Speed/Ignition Timing/ Idle
Mixture Ratio Adjustment”, EC-641.
2. GO TO 17.
17 CHECK BASE IDLE SPEED
Without CONSULT-II
Does engine speed fall to the following speed?
700±50 rpm (in “P” or “N” position)
OK or NG
OK 䊳 GO TO 18.
NG 䊳 1. Adjust engine speed by turning idle speed adjusting screw. Refer to “Idle Speed/
Ignition Timing/ Idle Mixture Ratio Adjustment”, EC-641.
2. GO TO 18.
18 CHECK CLOSED THROTTLE POSITION SWITCH IDLE POSITION
Without CONSULT-II
NOTE:
Always check ignition timing and base idle speed before performing the following.
1. Warm up engine to normal operating temperature.
2. Check FI cam, refer to procedure 12 or 13.
3. Stop engine.
䊳 GO TO 19.
TROUBLE DIAGNOSIS — BASIC INSPECTION
VG33E
Basic Inspection (Cont’d)
EC-703
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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