Description
OUTLINE
When a DTC is stored in ECM
When a DTC is stored in ECM and MIL is ON, a permanent DTC is erased with MIL shutoff if the same malfunction is not detected after performing the driving pattern for MIL shutoff three times in a raw.
*1: When the same malfunction is detected
in two consecutive trips, MIL
will illuminate.
*2: MIL will turn off after vehicle is driven
3 times (driving pattern B) without
any malfunctions.
When a DTC is not stored in ECM
The erasing method depends on a permanent DTC stored in ECM. Refer to the following table.
NOTE: If the applicable permanent DTC includes multiple groups, perform the procedure of Group B first. If the permanent DTC is not erased, perform the procedure of Group A.
*: For group, refer to EC-93, "DTC Index".
PERMANENT DTC ITEM
For permanent DTC items, MIL turns ON. Refer to EC-93, "DTC Index".
PERMANENT DTC SERVICE PROCEDURE
Work Procedure (Group A)
*1: When the same malfunction is detected in two consecutive trips, MIL will illuminate.
1.CHECK DTC
Check DTC.
Is any DTC detected? YES >> Repair malfunction(s) and erase DTC.
NO >> GO TO 2.
2.CHECK PERMANENT DTC
With CONSULT
With GST
Is any permanent DTC detected? YES >> GO TO 3.
NO >> END
3.PERFORM DTC CONFIRMATION PROCEDURE
Perform “DTC CONFIRMATION PROCEDURE” for DTCs which are the same as permanent DTCs stored in ECM. Refer to EC-93, "DTC Index".
>> GO TO 4.
4.CHECK PERMANENT DTC
With CONSULT
With GST
Is any permanent DTC detected? YES >> GO TO 1.
NO >> END
Work Procedure (Group B)
*1: When the same malfunction is detected
in two consecutive trips, MIL
will illuminate.
*2: After experiencing driving pattern B
and D, permanent DTC is erased.
*3: Indication does not change unless
the ignition switch is turned from ON
to OFF twice even after experiencing
driving pattern B or D.
NOTE: Drive the vehicle according to only driving patterns indicating “INCMP” in driving patterns B and D on the “PERMANENT DTC STATUS” screen.
1.CHECK DTC
Check DTC.
Is any DTC detected? YES >> Repair malfunction(s) and erase DTC.
NO >> GO TO 2.
2.CHECK PERMANENT DTC
With CONSULT
With GST
Is any permanent DTC detected? YES >> GO TO 3.
NO >> END
3.DRIVE DRIVING PATTERN B
CAUTION: • Always drive at a safe speed.
• Never erase self-diagnosis results.
• If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving pattern B and D is reset.
With CONSULT
With GST
>> GO TO 4.
4.CHECK PERMANENT DTC
With CONSULT
With GST
Is any permanent DTC detected? YES >> GO TO 5.
NO >> END
5.DRIVE DRIVING PATTERN D
CAUTION:
Drive the vehicle according to driving pattern D. Refer to EC-61, "DIAGNOSIS DESCRIPTION : Driving Pattern".
>> GO TO 6.
6.CHECK PERMANENT DTC
With CONSULT
With GST
Is any permanent DTC detected? YES >> GO TO 1.
NO >> END
U1040 ENG comm circuit
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
U1040
ENG COMM CIRCUIT
(Engine communication circuit)
ECM cannot transmit a communication signal to generator.
POSSIBLE CAUSE
Harne ...
Ground
Ground Distribution
MAIN HARNESS
ENGINE ROOM HARNESS
ENGINE CONTROL HARNESS
BODY HARNESS
BODY NO. 2 HARNESS
...
CAN system (type 5)
MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connection (connector side
an ...