Spark Test - Toyota 22R-E Service Manual

ON–VEHICLE INSPECTION

SPARK TEST

(a) Disconnect high–tension cord from the distributor.
(b) Hold the cord end approx. 12.5 mm (0.50 in.) from engine ground of vehicle.
(c) Check 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
BAD
CHECK CONNECTION OF IGNITION COIL,
IGNITER AND DISTRIBUTOR CONNECTOR
CHECK RESISTANCE OF HIGH–TENSION CORD
(See page IG–6)
Maximum resistance: 25 kW per cord
CHECK POWER SUPPLY TO IGNITION
COIL AND IGNITER
1. Turn ignition switch ON.
2. Check that there is battery voltage at ignition
coil positive (+) terminal.
CHECK RESISTANCE OF IGNITION COIL
(See page IG–7)
Resistance:
Primary 0.36–0.55W
Secondary 9.0 – 15.4 kW 11.4 – 18.1 kW
CHECK RESISTANCE OF SIGNAL
GENERATOR (PICKUP COIL)
(See page IG–8)
Resistance (Cold): 185 – 275W
(Hot): 240 – 325W
CHECK AIR GAP OF DISTRIBUTOR
(See page IG–7)
Air gap: 0.2 – 0.4 mm 10.008 – 0.016 in.)
CHECK IGt SIGNAL FROM ECM
(See page EG–134, 152 or 170)
TRY ANOTHER IGNITER
IGNITION SYSTEM
(Cold) (Hot)
0.45 – 0.85 W
– (22R– E)
Connect securely.
BAD
Replace the cord(s).
BAD
Check wiring between ignition switch
to ignition coil and igniter.
BAD
Replace the ignition coil.
BAD
Replace the distributor housing
assembly.
BAD
Replace the distributor housing
assembly.
BAD
Check wiring between ECM, distributor
and igniter, and then try another ECM.
BAD
IG–5