IG0DL-03
SPARK TEST
CHECK CONNECTIONS OF IGNITION COIL (WITH
CHECK POWER SUPPLY TO IGNITION COILS (WITH
1. Turn ignition switch to ON.
2. Check that there is battery positive voltage at ignition
CHECK RESISTANCE OF SENSORS
Resistance:
Cold
Hot
Camshaft position sensor
Crankshaft position sensor
835 - 1,400
Ω
1,630 - 2,740
Ω
1,060 - 1,645
Ω
2,065 - 3,225
Ω
CHECK IGT SIGNAL FROM ECM (See page
TRY ANOTHER IGNITION COIL (WITH IGNITER)
IGNITER) CONNECTORS
coil positive (+) terminal.
(See steps 4 and 5)
NO
OK
NO
OK
OK
BAD
OK
BAD
BAD
BAD
Connect securely.
Replace ignition coil (with igniter).
Check wiring between ignition switch to
Replace camshaft position sensor.
Check wiring between ECM and ignition
ignition coils (with igniters).
coils (with igniters), and then try another
CHANGE IT TO NORMAL IGNITION COIL (WITH IGNITER)
AND PERFORM SPARK TEST AGAIN
Replace crankshaft position sensor.
ECM.
OK
IGNITER)
-
IGNITION
IGNITION SYSTEM
IG-1
1210
Author:
Date:
2001 SIENNA (RM787U)
IGNITION SYSTEM
ON-VEHICLE INSPECTION
NOTICE:
”Cold” and ”Hot” in these sentences express the tempera-
ture 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 SPARK TEST
Check that the spark occurs.
(1)
Remove the ignition coils (with igniters) (See page
(2)
Remove the spark plugs.
(3)
Install the spark plug to the ignition coil, and connect
the ignition coil connector.
(4)
Disconnect the 6 injector connectors.
(5)
Ground the spark plug.
(6)
See if spark occurs while engine is being cranked.
NOTICE:
To prevent gasoline from being injected from injectors dur-
ing this test, crank the engine for no more than 5 - 10 se-
conds at time.
If the spark does not occur, do the test as follows: