Toyota 3S-GE Repair Manual page 431

IG-11
IGNITION SYSTEM — ON—VEHlCLE INSPECTION
ST202 Ohmmeter
SW20
Ohmmeter
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IGNITION COIL INSPECTION
NOTICE: 'Cold' and 'Hot' in the following sentences
express the temperature of the coils themselves. 'Cold' is
from — 10°C (14° F) to 50°C (122° F) and 'Hot' is from 50°
C (122°F) to 100°C (212°F).
1. DISCONNECT IGNITION COIL CONNECTOR
2. DISCONNECT HIGH—TENSION CORD FROM
IGNITION COIL
3. INSPECT PRIMARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between
the positive (+) and negative (—) terminals.
Primary coil resistance:
Cold
0.36 — 0.55 Q
Hot
0.45 — 0.65 Q
If the resistance is not as specified, replace the igni-
tion coil.
4. INSPECT SECONDARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between
the positive (+) and high—tension terminals.
Secondary coil resistance:
Cold
9.0 —- 15.4 kQ
Hot
11.4 — 18.1 kQ
If the resistance is not as specified, replace the igni-
tion coil.
5. RECONNECT HlGH—TENSlON CORD TO IGNITION
COIL
6. RECONNECT IGNITION COIL CONNECTOR