Ignition System (1Az–Fse) On-Vehicle Inspection - Toyota Avensis ZZT251 2003 Service And Repair Manual

18–12
IGNITION SYSTEM (1AZ–FSE)
ON–VEHICLE INSPECTION
NOTICE:
"Cold" and "Hot" in this section mean 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. INSPECT IGNITION COIL (WITH IGNITER) AND SPARK TEST
(a) Check for DTCs.
NOTICE:
If DTC is present, perform a troubleshooting in accordance with a procedure for that DTC.
(b) Check that spark occurs.
(1) Remove the cylinder head cover No. 1.
(2) Remove the ignition coils (with igniter).
(3) Using a 16mm (0.63 in) plug wrench, remove the spark plugs.
(4) Install the spark plugs to each ignition coil (with igniter) and connect the ignition coil connectors.
(5) Disconnect the 4 injector connectors.
(6) Ground the spark plugs.
(7) Check if spark occurs at each spark plug while engine is being cranked.
NOTICE:
Y
Be sure to ground the spark plug when checking.
Y
Replace the ignition coil it is given physical impact.
Y
Do not crank the engine for more than 2 seconds.
If the sparks do not occur, do the following test:
SPARK TEST
NG
CHECK CONNECTION OF IGNITION COIL WITH IGNITER
CONNECTOR
OK
CHANGE IT TO NORMAL IGNITION COIL WITH IGNITER
AND PERFORM SPARK TEST AGAIN
NG
CHECK POWER SUPPLY TO IGNITION COIL WITH
IGNITER
1. Turn ignition switch ON.
2. Check that there is battery voltage at ignition coil positive (+)
terminal.
OK
CHECK RESISTANCE OF CAMSHAFT POSITION
SENSOR (See page 18–14)
835 to 1,400 f
Resistance:
OK
CHECK RESISTANCE OF CRANKSHAFT POSITION
SENSOR (See page 18–14)
985 to 1,600 f 1,265 to 1,890 f
Resistance:
OK
CHECK IGT SIGNAL FROM ECM
(See page 05–439)
OK
REPAIR WIRING BETWEEN IGNITION COIL AND ECM
AVENSIS REPAIR MANUAL (RM1018E)
IGNITION
Cold Hot
1,060 to 1,645 f
Cold Hot
http://vnx.su
– IGNITION SYSTEM (1AZ–FSE)
(See page 14–186)
Connect securely.
NG
Replace ignition coil with igniter.
OK
Check wiring between ignition switch to
ignition coil with igniter.
NG
Replace camshaft position sensor.
NG
Replace crankshaft position sensor.
NG
Check ECM
NG
1807Q–01
(See page 01–32)