2004 MITSUBISHI ENDEAVOR relay

Malfunction of fan control relay Malfunction of fan control module Malfunction of PCM
DIAGNOSIS Required Special Tools:
MB991223: Harness Set MB991923: Power Plant ECU Check Harness
STEP 1. Check the fan control relay.
Refer to FAN CONTROL RELAY CONTINUITY CHECK
.
Q: Is the fan control relay in good condition?
YES: Go to Step 2.
NO: Replace the part, then go to Step 7 .
STEP 2. Check the harness wire between fan control relay connector A-
10X (terminal 2) and fan control module connector A-23 (terminal 3).

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 26: Identifying Connector A
-23
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the harness wires between fan control relay connector A-10X and
fan control module connector A-23 damaged?
YES: Repair or replace the part, then go to Step 7 .
NO: Go to Step 3.
STEP 3. Measure the output circuit voltage at PCM connector B-18
(terminal 10) by using check harness special tool MB991923.
1. Disconnect all the connectors from the PCM.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 44: Measuring Voltage Between Fan Control Module
-Side Connector
Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. Turn the A/C switch to the "ON" position.
7. Measure the voltage between the fan control module-side connector terminals
while the fan is running. The voltage should repeat the values 1) and 2) below.
Standard value:
1.8.2+/-2.6 V
2.Battery positive voltage+/-2.6 V
8. If the voltage does not repeatedly change as indicated, replace the radiator fan
motor.
FAN CONTROL RELAY CONTINUITY CHECK
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 45: Checking Fan Control Relay

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

FAN CONTROL RELAY CONTINUITY CHEC
K
RADIATOR REMOVAL AND INSTALLATION BATTERY VOLTAGE
TERMINAL NO. TO
BE CONNECTED TO
TESTER
CONTINUITY
TEST RESULTS
Not applied
4-2
Open circuit
Connect terminal No.3 and
battery (-) terminal. Connect
terminal No. 1 and battery (+)
terminal.
4-2
Less than 2 ohms

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

INSPECTION HORN RELAY CONTINUITY CHECK
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Horn - Endeavor

Fig. 2: Checking Continuity Battery And Horn Relay


2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Horn - Endeavor

When metering R-134a into the refrigeration system, keep the supply tank or cans
in an upright position. If the refrigerant container is on its side or upside down,
liquid refrigerant will enter the system and damage the compressor.
Refrigerant will tarnish bright metal and chrome surfaces, and in combination with
moisture can severely corrode all metal surfaces. OPERATION CONDENSER FAN AND RADIATOR FAN CONTROL For the operation of each fan, refer to
SYMPTOM CHART
.
COMPRESSOR CONTROL WHEN OPERATING THE AIR CONDITIONING SWITCH
The air thermo sensor, which senses the temperature of the air flowing out of
the evaporator, deactivates the compressor at 3°C (37.4°F) or below. The dual pressure switch turns OFF when the refrigerant pressure becomes
excessively high or low, thus protecting the compressor circuit. When the air thermo sensor is activated, and the ignition switch, blower switch,
and air conditioning switch are ON, the A/C compressor clutch relay is
energized.
WHEN OPERATING THE MODE SELECTION DIAL
The air conditioning will work when the mode selection dial is set to the
"Defroster" or "Defroster/foot" position, or the temperature control dial is set to
the "MAX A/C" position. In other dial positions, when the air conditioning
switch is turned on, the air conditioning will work.
A/C COMPRESSOR CLUTCH RELAY ON CONDITIONS
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor