6-40 FI SYSTEM/ CVT SYSTEM
“C24” or “C25” IGNITION SYSTEM MALFUNCTION
*Refer to the IGNITION SYSTEM for details. (10-18)
“C32” or “C33” FUEL INJECTOR CIRCUIT MALFUNCTION
INSPECTION
DETECTED CONDITION POSSIBLE CAUSE
CKP signal is produced but fuel injector signal is
interrupted continuous by 4 times or more.
• Injector circuit open or short.
• Injector malfunction.
•
ECM malfunction.
ECM couplers
45
b
1
2
Ω
Ω
• Remove the front box. (
:
9-18)
1
2
Ye s
Ye s
No
No
Open circuit in the Yellow/
Red wire.
Turn the ignition switch OFF.
Check the injector coupler for loose or poor contacts.
If OK, then measure the injector resistance.
Disconnect the coupler and measure the resistance
between terminals.
Turn the ignition switch ON.
Measure the injector voltage between Y/R wire and
ground.
;
Injector voltage: Battery voltage
(Y/R – Ground)
z
09900-25008: Multi circuit tester
u
Tester knob indication: Voltage (
-
)
Replace the ECM with a new one,
and inspect it again.
;
Injector resistance: 11 – 13 Ω at 20 ˚C (68 ˚F)
(Terminal – Terminal)
;
Injector continuity: ∞ Ω (Infinity)
(Terminal – Ground)
z
09900-25008: Multi circuit tester
t
Tester knob indication: Resistance (Ω)
If OK, then check the continuity between each terminal
and ground.
Replace the injector with
a new one. (
:
7-17, 21)
NOTE:
Injector voltage can be detected only 3 seconds after
ignition switch is turned ON.
Gr/W, Gr/B or Y/R wire open or shorted to ground, or poor
4
,
5
or
b
connection.
If wire and connection are OK, intermittent trouble or faulty
ECM.
Recheck each terminal and wire harness for open circuit and
poor connection.
GroundGround
Ground
Ground
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