Filter
Top Products
7-16
FUEL INJECTION SYSTEM
TROUBLESHOOTING DETAILS
This section describes the countermeasures per fault code number displayed on the FI diagnostic
tool. Check and service the items or components that are the probable cause of the malfunction fol-
lowing the order given. After the check and service of the malfunctioning part have been completed,
reset the FI diagnostic tool display according to the "Reinstatement method".
Fault code No.
Fault code number displayed on the FI diagnostic tool when the engine failed to work normally. Re-
fer to "FAULT CODE TABLE".
Diagnostic code No.
Diagnostic code number to be used when the diagnostic mode is operated. Refer to "DIAGNOSTIC
CODE TABLE".
Fault code No. 12
Symptom No normal signals are received from the crankshaft position sensor.
Fail-safe system Able to start
Able to drive
Diagnostic code No. —
FI diagnostic tool dis-
play
—
Checking method —
Item Item/components and probable cause Check or maintenance job Checking method
1 Check the connection and locking con-
dition of the crankshaft position sensor
coupler.
Disconnect the coupler and check the
pins. (bent or broken terminals and
locking condition of the pins)
Poor connection → Properly
connect, repair, or replace.
Crank the engine and
check the fault code
display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 2.
2 Check the connection and locking con-
dition of the wire harness ECU coupler.
Disconnect the coupler and check the
pins. (bent or broken terminals and
locking condition of the pins)
Poor connection → Properly
connect, repair, or replace.
Crank the engine and
check the fault code
display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 3.
3 Continuity of harness Open or short circuit → Re-
place.
Between the crankshaft po-
sition sensor coupler and
ECU coupler.
(Gray–Gray)
(Black/Blue–Black/Blue)
Crank the engine and
check the fault code
display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 4.