MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 85: View Of Mode Selection Damper Control Motor Circuit

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 86: Identifying Connector C
-16
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 87: Identifying Connector C
-123

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

DTC SET CONDITION
If the air mixing damper control motor does not work normally, DTC B1065
will be set.
TECHNICAL DESCRIPTION (COMMENT)
CURRENT TROUBLE
The A/C-ECU, the mode selection damper control motor and potentiometer, or
connector(s) or wiring between them may be defective.
PAST TROUBLE
If DTC B1065 is stored as a past trouble, carry out diagnosis with particular emphasis on wirin
g and connecto
r(s)
betwee
n the A/C-ECU
and the m
ode


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

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. 88: Connecting Scan Tool MB991958 To Data Link Connector

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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

2. Turn the ignition switch to "ON" position.
3. Diagnose the CAN bus line. Q: Is the check result satisfactory?

YES:
Go to Step 2.
NO:
Repair the CAN bus lines (Refer to
CAN BUS DIAGNOSTICS
TABLE
).
Then go to Step 7 .
STEP 2. Recheck for diagnostic trouble code.

Recheck if the DTC is set.
1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.
Q: Is the check result satisfactory?

YES:
It can be assumed that this malfunction is intermittent.
Refer to
HOW TO USE TROUBLESHOOTING/ INSPECTION
SERVICE POINTS
.
NO:
Go to Step 3.
STEP 3. Usin
g scan tool MB991958, check actuator test item 13, 14, 15, 16,
17: Air outlet c/o dumper.

1. Connect scan tool MB991958 to the data link connec
tor
CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.

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

Fig. 89: Conn
ecting Scan Tool MB991958 To Data Link Connector

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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

2. Start the engine.
3. Use scan tool MB991958 to run the actuator test.
Item 13: air mix damper motor (FACE position)
Item 14: air mix damper motor (FOOT/FACE position)
Item 15: air mix damper motor (FOOT position)
Item 16: air mix damper motor (DEF/FOOT position)
Item 17: air mix damper motor (DEF position)
Check that the mode selection damper control motor operates.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor within the specified range?

YES:
Replace the A/C-ECU. Then go to Step 7 .
NO:
Go to Step 4.
STEP 4. Check A/C-ECU connector C-16 and mode selection damper
control motor and potentiometer connector C-123 for loose, corroded or
damaged terminals, or terminals pushed back in the connector.

Q: Are A/C-ECU connector C-16 and mode selection damper control
motor and potentiometer connector C-123 in good condition?

YES:
Go to Step 5.
NO:
Repair or replace the connector. Refer to
HARNESS
CONNECTOR INSPECTION
. Then
go to Ste
p 7 .

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

Fig. 90: Locating Connector C
-16
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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

Fig. 91: Locating Connector C
-123

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 5. Check the wiring harness between A/C-ECU connector C-16
(terminals 11 and 4) and mode selection damper control motor and
potentiometer connector C-123 (terminals 1 and 2).

Q: Are the wiring harnesses between A/C-ECU connector C-16 (terminals
11 and 4) and mode selection damper control motor and potentiometer
connector C-123 (terminals 1 and 2) in good condition?

YES:
Go to Step 6.
NO:
Re
pair the wirin
g harness. Then
go to Ste
p 7 .

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