2004 MITSUBISHI ENDEAVOR relay

Fig. 232: Locating Connector C
-16
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Is the wiring harness between defogger relay connector C-201
(terminal 3) and A/C-ECU connector C-16 (terminal 8) in good condition?

YES:
Go to Step 12.
NO:
Repair or replace the wiring harness. Refer to
HARNESS
CONNECTOR INSPECTION
. Check that the defogger system works
normall
y.

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

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
STEP 12. Check the wiring harness between defogger relay connector C-
201 (terminal 4) and defogger connector F-01 (terminal 1).

NOTE: Also check junction block connector F-03 and junction
block connector C-204 for loose, corroded, or damaged
terminals, or terminals pushed back in the connector. If
intermediate connector F-03 or junction block
connector C-204 is damaged, repair or replace the
connector as described in HARNESS CONNECTOR
INSPECTION
.

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

Q: Is the wiring harness between defogger relay connector C-201
(terminal 4) and defogger connector F-01 (terminal 1) in good condition?

YES:
Replace the A/C-ECU. The defogger should operate normally.
NO:
Repair or replace the wiring harness. Refer to
HARNESS
CONNECTOR INSPECTION
. Check that the defogger system works
normall
y.

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

ADJUSTMENT 1. Select a quiet area for testing. Duplicate conditions as much as possible.
Switch the compressor on and off several times to clearly identify compressor
noise. To duplicate high ambient conditions (high head pressure), restrict air
flow through the condenser. Install a manifold gauge set to make sure
discharge pressure doesn't exceed 2,070 kPa (300.2 psi).
2. Tighten all compressor mounting bolts, clutch mounting bolt, and compressor
drive belt. Check to assure clutch coil is tight (no rotation or wobble).
3. Check refrigerant hoses for rubbing or interference that can cause unusual
noises.
4. Check refrigerant charge. (Refer to
CHARGING
and
DISCHARGING
).
5. Recheck compressor noise as in Step 1 .
6. If noise still exists, loosen compressor mounting bolts and retighten. Repeat
Step 1 .
7. If noise continues, replace compressor and repeat from Step 1 .
POWER RELAY CHECK FRONT BLOWER RELAY CONTINUITY CHECK
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 277: Identifying Front Blower Relay

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

FRONT BLOWER RELAY CONTINUITY CHART


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

A/C COMPRESSOR CLUTCH RELAY CONTINUITY CHECK BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
4 - 5
Open circuit
Connect terminal 1 to the
positive battery terminal

Connect terminal 3 to the
negative battery terminal
4 - 5
Less than 2 ohms

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

Fig. 278: Identifying A/C Compressor Clutch Relay

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

A/C COMPRESSOR CLUTCH RELAY CONTINUITY CHART

FAN CONTROL RELAY CONTINUITY CHECK BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
1 - 4
Open circuit
Connect terminal 2 to the
positive battery terminal

Connect terminal 3 to the
negative battery terminal
1 - 4
Less than 2 ohms

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

Fig. 279: Identifying Fan Control Relay

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