TSRM/MK3 Supra/Repair Manual
Repair ManualWiring DiagramsCommunity Fixes
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IG/Ignition System, page 9

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Ignition System — MK3 Supra Ignition System, page 9
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Page text (OCR transcript)
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.
Primary coil resistance (cold): 0.24 - 0.30 Ω

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 kΩ

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:
G1 → 140 - 180 Ω
G2 pickup coil resistance:
G2 → 140 - 180 Ω
NE pickup coil resistance:
NE → 180 - 220 Ω
If the resistance is not as specified, replace the distributor.

INSPECTION OF IGNITER
(See procedure Spark Test on page IG-5)