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FUEL SYSTEM (DFI) 3-23
Self-Diagnosis
Service Code (Character) Table
Service
Code
(used in
ECU)
Service Code
Character
(displayed on
Meter Unit)
Possible Problems Fail-Safe Function
11
Throttle sensor malfunction,
wiring open or short
The ECU locks ignition timing into
the ignition timing at closed throttle
position and sets the DFI in the D-J
method (see Note 1).
12
Inlet air pressure sensor
malfunction, wiring open or short
The ECU sets the DFI in the α-N
method (see Note 2).
13
Inlet air temperature sensor
malfunction, wiring open or short
The ECU sets the inlet air temperature
at 40°C.
14
Water temperature sensor
malfunction, wiring open or short
The ECU sets the water temperature
at 70°C.
21
Crankshaft sensor malfunction,
wiring open or short
–
23
Camshaft position sensor
malfunction, wiring open or short
The ECU continues to ignite cylinders
in the same sequence following the
last good signal.
31
Vehicle-down sensor
malfunction, wiring open or
short
The ECU slows down the engine
speed less than 3 000 r/min (rpm) by
stopping the ignition.
41
Injector #1 malfunction, wiring
open or short
–
42
Injector #2 malfunction, wiring
open or short
–
43
Injector #3 malfunction, wiring
open or short
–
44
Injector #4 malfunction, wiring
open or short
–
51
Ignition coil #1, #4 malfunction,
wiring open or short
The ECU shuts off the injectors #1/#4
to stop fuel to the cylinders #1/#4.
52
Ignition coil #2, #3 malfunction,
wiring open or short
The ECU shuts off the injectors #2/#3
to stop fuel to the cylinders #2/#3.
71 Engine overheat
The ECU slows down the engine
speed less than 3 000 r/min (rpm) by
stopping the ignition.
72 Engine oil pressure too low
The ECU slows down the engine
speed less than 3 000 r/min (rpm) by
stopping the ignition.
(JT1500-A1)
73
(JT1500-A2 ∼)
Oil temperature sensor
malfunction, wiring open or
short
The ECU sets the oil temperature at
60°C.
The ECU slows down the engine
speed less than 3 000 r/min (rpm) by
stopping the ignition.
76
(JT1500-A2 ∼)
Engine oil overheat
The ECU slows down the engine
speed less than 3 000 r/min (rpm) by
stopping the ignition.