
IGNITION SYSTEM — On-Vehicle Inspection (7M-GE)
ON-VEHICLE INSPECTION (7M-GE)
SPARK TEST
CHECK THAT SPARK OCCURS
(a) Disconnect high-tension cord from the distributor.
(b) Hold the end approx. 12.5 mm (0.50 in.) from body of vehicle.
(c) See if spark occurs while engine is being cranked.
HINT: To prevent gasoline from being injected from injectors during this test, crank the engine for no more than 1-2 seconds at a time.
If the spark does not occur, perform the test as follows:
SPARK TEST
NO
CHECK CONNECTION OF IGNITION COIL, IGNITER AND DISTRIBUTOR CONNECTORS
BAD → Connect securely.
OK ↓
CHECK RESISTANCE OF HIGH-TENSION CORDS (See page IG-6)
BAD → Replace the cord(s).
OK ↓
CHECK POWER SUPPLY TO IGNITION COIL
1. Ignition switch turn to ON.
2. Check that there is battery voltage at ignition coil positive (+) terminal.
BAD → Check wiring between ignition switch to ignition coil.
OK ↓
CHECK RESISTANCE OF IGNITION COIL (See page IG-9)
Resistance (Cold):
Primary 0.24—0.30 Ω
Secondary 9.2—12.4 kΩ
BAD → Replace the ignition coil.
OK ↓
CHECK RESISTANCE OF DISTRIBUTOR PICK UP COIL (See page IG-9)
BAD → Replace the distributor.
OK ↓
CHECK AIR GAP OF DISTRIBUTOR (See page IG-9)
Air gap: 0.2 mm (0.008 in.) or more
BAD → Replace the distributor.
OK ↓
CHECK IGT SIGNAL FROM ECU (See page FI-43)
BAD → Check wiring between ECU and distributor, only then try another ECU.
OK ↓
TRY ANOTHER IGNITER