ON–VEHICLE INSPECTION
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 engine
ground of vehicle.
(c) See if spark occurs while engine is being cranked.
HINT: 1’o 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 fol–
lows:
CHECK RESISTANCE OF SIGNAL GENERATOR
(PICKUP COIL)
(See page IG–23)
Resistance: (Cold) (Hot)
G 1 and G(–) 125–200 160–235
G2 and G(–) 125–200 160 – 235
NE and G(–) 155 – 250 190 – 290
CHECK POWER SUPPLY TO IGNITION COIL AND
IG NITER .
1. Turn ignition switch to ON. –
2. Check that there is battery voltage at ignition coil
positive (+) terminal.
CHECK RESISTANCE OF IGNITION COIL
(See page IG–22)
Resistance: (Cold) (Hot)
Primary 0.36 – 0.55 0.45 – 0.65
Secondary 9.0 –15.4 11.4 – 18.1 k
CHECK RESISTANCE OF HIGH–TENSION CORD
(See page IG–19)
Maximum resistance: 25 k per cord
CHECK AIR GAP OF DISTRIBUTOR
(See page IG–23)
Air gap: 0.2 – 0.4 mm (0.008 – 0.016 in.)
Check wiring between ignition switch to
ignition coil and igniter.
CHECK CONNECTION OF IGNITION COIL, IG-
NITER AND DISTRIBUTOR CONNECTOR
Check wiring between ECM, distributor and
igniter, and then try another ECM.
CHECK IGT SIGNAL FROM ECM
(See page EG–195)
Replace the distributor housing assembly.
Replace the distributor housing assembly.
Replace the ignition coil.
TRY ANOTHER IGNITER
Replace the cord(s).
Connect securely.
SPARK TEST
BAD
BAD
BAD
BAD
BAD
BAD
BAD
–IGNITION SYSTEM (3VZ–E)
IG–18
To Next Page
Loading...
