FUEL SYSTEM <4D5-step
III
> - Troubleshooting
13-7
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC
TROUBLESHOOTING
Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points.
NOTE
When replacing the engine-ECU, replace immobilizer-ECU
and ignition key as well at the same time.
DIAGNOSIS FUNCTION
ENGINE WARNING LAMP (CHECK ENGINE LAMP)
Engine warning lamp is lit when any abnormality takes place
in the item related to electronically controlled fuel injection
system shown in the following table.
If the malfunction indicator lamp has been on and/or is lit
when the engine is in operation, check the diagnosis output.
Engine warning lamp check items
Accelerator pedal position sensor (main)
Accelerator pedal position sensor (sub)
Boost pressure sensor (Boost sensor)
Crank angle sensor
Control sleeve position sensor
Timer piston position sensor
Throttle solenoid valve
GE actuator
Variable geometry control pressure sensor
Barometric pressure sensor
Timing control valve
Idle switch
Engine-ECU
METHOD OF ERASING AND ERASING DIAGNOSIS
CODES
Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points.
INSPECTION USING MUT
-II
DATA LIST AND
ACTUATOR TESTING
1. Carry out inspection by means of the data list and the
actuator test function.
If there is an abnormality, check and repair the chassis
harnesses and components.
2. After repairing, re-check using MUT-
II
and check that
the abnormal input and output have returned to normal
as a result of the repairs.
3. Erase the diagnosis code memory.
4. Remove the MUT-
II
.
5. Start the engine again and carry out a road test to confirm
that the problem has disappeared.
Engine warning lamp
(check engine lamp)
