Toyota Supra 1990 Manual page 343

Ohmmeter
o
NEG1G2G8
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IGNITION SYSTEM - On-Vehicle Inspection (7M-GE)
IG-9
INSPECTION OF IGNITION COIL
1. DISCONNECT HIGH-TENSION CORD
2. INSPECT PRIMARY COIL RESISTANCE
/ Using an ohmmeter, measure the resistance between the
positive
(+)
and negative (-) terminals.
IG0599
IG0600
IG1048
Primary coil resistance (cold): 0.24 - 0.30 n
3. INSPECT SECONDARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the
positive
(+)
terminal and high-tension terminal.
Secondary coil resistance (cold): 9.2 - 12.4 kn
4. RECONNECT HIGH-TENSION CORD
INSPECTION OF DISTRIBUTOR
1. INSPECT AIR GAPS
Using a feeler gauge, measure the gap between the signal
rotor and pickup coil projection.
Air gap: 0.2 mm (0.008 in.) or more
If the gap is not as specified, replace the distributor.
2. INSPECT PICKUP COILS
Using an ohmmeter, check resistance of the pickup coil.
G1 pickup coil resistance:
G 1 - G 8 140 - 180 n
G2 pickup coil resistance:
G2 - G 8 140 - 180 n
NE pickup coil resistance:
NE - G8 180 - 220 n
If the resistance is not as specified, replace the distributor.
INSPECTION OF IGNITER
(See procedure Spark Test on page IG-5)