MITSUBISHI ENDEAVOR 2004 Service Repair Manual

STEP 7. Check the wiring harness between A/C-ECU connector C-16
(terminals 17 and 18) and power transistor connector C-108 (terminals 1
and 3).

Q: Is the wiring harness between A/C-ECU connector C-16 (terminals 17
and 18) and power transistor connector C-108 (terminals 1 and 3) in good
condition?

YES:
Go to Step 8.
NO:
Repair the wiring harness. The front blower motor should operate
normall
y.

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

Fig. 212: Locating Connectors C
-16 And C
-108

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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

STEP 8. Replace the power transistor.

Q: Does the blower motor operate normally?

YES:
It can be assumed that this malfunction is intermittent. Refer to
HOW TO USE TROUBLESHOOTING/ INSPECTION SERVICE POINTS
.
NO:
Replace the A/C-ECU. Check that the air conditioning works
normally.
INSPECTION PROCEDURE 7: THE A/C INDICATOR FLASHES TECHNICAL DESCRIPTION (COMMENT) If the A/C indicator flashes, inadequate refrigerant quantity, the ambient air
temperature sensor circuit or the A/C pressure sensor circuit is suspected. TROUBLESHOOTING HINTS
Malfunction of the A/C pressure sensor Malfunction of the ambient air temperature sensor Malfunction of the A/C-ECU
DIAGNOSIS Required Special Tools:

MB991223: Test 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, read the diagnostic trouble code.

Check if an A/
C-ECU DTC is set.

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

1. Connect scan tool MB991958 to the data link connec
tor.

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

Fig. 213: Connecting Scan Tool MB991958 To Data Link Connector

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

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to the "ON" position.
3. Check if the DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result satisfactory?

YES:
Go to Step 2.
NO:
Refer to
DIAGNOSTIC TROUBLE CODE CHART
.
STEP 2. Check the refrigerant level.

Use the refrigerant recovery station to remove all of the refrigerant, and then
calculate the amount of the refrigerant and charge it.
Q: Is the refrigerant level correct?

YES:
Replace the A/C-ECU.
NO:
Correct the refrigerant level (Refer to
REFRIGERANT LEAK
REPAIR PROCEDURE
). Check that the air conditioning works
normally.
INSPECTION PROCEDURE 8: DEFOGGER FUNCTION DOES NOT OPERATE
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 214: View Of Defogger Circuit Diagram

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

Fig. 215: Identifying Fusible Link

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

Fig. 216: Identifying Connector C
-16
Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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

Fig. 217: Identifying Connectors C
-201, C
-204, C
-211, C
-215 And C
-216

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