Toyota Supra 1990 Manual page 345

IGNITION SYSTEM - On-Vehicle Inspection (7M-GTE)
IG-11
6. REMOVE IGNITION COIL COVER
(a) Remove the oil filler cap.
(b) Remove the five nuts and ignition coil cover.
7.
REMOVE IGNITION COIL WITH BRACKET
(a) Remove the nut.
(b) Disconnect the No.1 and No.2 high-tension cords from
the ignition coil and clamp.
(c) Remove the ignition coil with bracket and high-tension
cords.
(d) Remove the No.1 and No.2 high-tension cords from
spark plugs.
L--_ _ _ _ _ _ _ _ _ _ _ _ _
E _ M -' - 62.....:..J49
8.
REMOVE SPARK PLUGS
Ohmmeter
[7l]
o
o
o
IG0667
9.
PERFORM SPARK TEST
(a) Install the oil filler cap.
(b) Install the spark plugs to each high-tension cord.
(c) Ground the spark plug.
(d) Disconnect the solenoid resistor and cold start injec-
tor connector.
(e) See if a spark occurs while engine is being cranked.
INSPECTION OF HIGH-TENSION CORDS
Using an ohmmeter, measure the resistance.
Maximum resistance: 25 kO per cord
If resistance exceeds maximum, check the terminals.
If necessary, replace the high-tension cord.
INSPECTION OF SPARK PLUGS
(See pages IG-7,8)