2004 MITSUBISHI ENDEAVOR wiring

If DTC B1041 or B1042 is stored as a past trouble, carry out diagnosis with
particular emphasis on wiring and connector(s) between the A/C-ECU and the
air mixing damper control motor and potentiometer. If the connectors and
wiring are normal, and obviously the ECU is the cause of the trouble, replace
the ECU. If in doubt, do not replace the ECU.
TROUBLESHOOTING HINT
Malfunction of connector. Malfunction of the harness. Malfunction of the air mixing damper control motor and potentiometer. Malfunction of the A/C-ECU.
DIAGNOSIS REQUIRED SPECIAL TOOL:

MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A (Vehicles with CAN
communication system)
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

Use scan tool MB991958 to diagnose the CAN bus lines.
1. Connect scan tool MB991958 to the data link connec
tor.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 58: Locating Connectors C
-16, C
-17 And C
-109
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 5. Check the wiring harness between A/C-ECU connectors C-16
(terminals 16 and 20), C-17 (terminal 29) and air mixing damper control
motor and potentiometer connector C-109 (terminals 5, 7 and 3).

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 59: Locating Connectors C
-16, C
-17 And C
-109
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Are the wiring harness between A/C-ECU connectors C-16 (terminals
16 and 20), C-17 (terminal 29) and air mixing damper control motor and
potentiometer connector C-109 (terminals 5, 7 and 3) in good condition?

YES:
Go to Step 6.
NO
: Re
pair the wirin
g harness. Then
go to Ste
p 7 .
NOTE: Also check joint connectors C-103 and C-104 for loose,
corroded, or damaged terminals, or terminals pushed
back in the connector. If joint connector C-103 or C-104
is damaged, repair or replace the connector as
described in HARNESS CONNECTOR INSPECTION
.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

The A/C-ECU, the air mixing damper control motor and potentiometer, or
connector(s) or wiring between the two may be defective.
PAST TROUBLE
If DTC B1045 is stored as a past trouble, carry out diagnosis with particular
emphasis on wiring and connector(s) between the A/C-ECU and the air mixing
damper control motor and potentiometer. If the connectors and wiring are
normal, and obviously the ECU is the cause of the trouble, replace the ECU. If
in doubt, do not replace the ECU.
TROUBLESHOOTING HINT
Malfunction of connector. Malfunction of the harness. Malfunction of the air mixing damper control motor and potentiometer. Malfunction of the A/C-ECU.
DIAGNOSIS REQUIRED SPECIAL TOOL:

MB991223: Harness Set MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A (Vehicles with CAN
communication system)
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

Use scan tool MB991958 to diagnose the CAN bus lines.
1. Connect scan tool MB991958 to the data link connec
tor.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

STEP 5. Check the wiring harness between A/C-ECU connector C-16
(terminals 1 and 2) and air mixing damper control motor and
potentiometer connector C-109 (terminals 1 and 2).

Q: Are the wiring harness between A/C-ECU connector C-16 (terminals 1
and 2) and air mixing damper control motor and potentiometer connector
C-109 (terminals 1 and 2) in good condition?

YES:
Go to Step 6.
NO:
Repair the wiring harness. Then go to Step 7 .

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 75: Identifying Connectors C
-103,C
-104 And C
-123

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

DTC SET CONDITION
DTC B1061 or B1062 is set if there is an open or short circuit in the
potentiometer input circuit, or if there is an open in the power circuit, or
ground circuit.
TECHNICAL DESCRIPTION (COMMENT)
CURRENT TROUBLE
The A/C-ECU, the mode selection damper control motor and potentiometer, or
connector(s) or wiring between the two may be defective.
PAST TROUBLE
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

If DTC B1061 or B1062 is stored as a past trouble, carry out diagnosis with
particular emphasis on wiring and connector(s) between the A/C-ECU and the
mode selection damper control motor and potentiometer. If the connectors and
wiring are normal, and obviously the ECU is the cause of the trouble, replace
the ECU. If in doubt, do not replace the ECU.
TROUBLESHOOTING HINT
Malfunction of connector. Malfunction of the harness. Malfunction of the mode selection damper control motor and potentiometer. Malfunction of the A/C-ECU.
DIAGNOSIS REQUIRED SPECIAL TOOLS:

MB991223: Harness Set MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A (Vehicles with CAN
communication system)
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

Use scan tool MB991958 to diagnose the CAN bus lines.
1. Connect scan tool MB991958 to the data link connec
tor.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 79: Locating Connector C
-123

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 5. Check the wiring harness between A/C-ECU connectors C-16
(terminals 16 and 20), C-17 (terminal 21) and mode selection damper
control motor and potentiometer connector C-123 (terminals 5, 7 and 3).

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor