2004 MITSUBISHI ENDEAVOR diagnosis

NO: Tighten the connecting nuts and mounting nuts to the specified
torque. Then go to Step 3 .
STEP 2. Check the sleeve yoke's spline of front propeller shaft for wear.
Q: Is wear apparent?
YES: Replace the propeller shaft. Then go to Step 3.
NO: Go to Step 3.
STEP 3. Retest the system.
Q: Is the abnormal noise eliminated?
YES: The procedure is complete.
NO: Recheck from Step 1 .
INSPECTION PROCEDURE 2: Noise and Vibration at High Speed DIAGNOSIS
STEP 1. Check the propeller shaft run-out.
1. Remove the propeller shaft. (Refer to PROPELLER SHAFT
.)
2. Measure the propeller shaft runout.
Limit: 0.6 mm (0.02 inch)

2004 Mitsubishi Endeavor LS
2004 DRIVELINE/AXLE Propeller Shaft - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
SPECIAL TOOLS Fig. 2: Identifying Engine Cooling Special Tools

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
ENGINE COOLING DIAGNOSIS INTRODUCTION The system cools the engine so that it does not over-heat and maintains the engine
at an optimum temperature. The system components are the radiator, water pump,
thermostat, condenser fan assembly. Possible faults include low coolant,
contamination, belt loosening and component damage. TROUBLESHOOTING STRATEG
Y

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Use these steps to plan your diagnostic strategy. If you follow them carefully, you
will be sure to find most of the engine cooling faults.
1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Find and repair the malfunction by following the SYMPTOM CHART.
4. Verify that the malfunction is eliminated. SYMPTOM CHART SYMPTOM INSPECTION PROCEDURE CHART SYMPTOM PROCEDURES INSPECTION PROCEDURE 1: Coolant Leak DIAGNOSIS
STEP 1. Check for coolant leaks
.
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE PAGE
Coolant Leak
1
INSPECTION PROCEDURE 1:
Coolant Leak
Engine Overheating
2
INSPECTION PROCEDURE 2:
Engine Overheating
Radiator Fan and
Condenser Fan do not
Operate
3
INSPECTION PROCEDURE 3:
RADIATOR FAN AND
CONDENSER FAN DO NOT
OPERATE
Radiator Fan and
Condenser Fan do not
Change Speed or Stop
4
INSPECTION PROCEDURE 4:
RADIATOR FAN AND
CONDENSER FAN DO NOT CHANGE SPEED OR STOP
Radiator Fan does not
Operate
5
INSPECTION PROCEDURE 5: Radiator Fan does not Operate
Condenser Fan does
not Operate
6
INSPECTION PROCEDURE 6: Condenser Fan does not Operate

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

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.
CIRCUIT OPERATION
The fan control module is powered from fusible link number 2. The PCM judges the required revolution speed of radiator fan motor and
condenser fan motor using the input signals transmitted from A/C switch,
automatic compressor controller, vehicle speed sensor and engine coolant
temperature sensor. The PCM activates the fan control module to drive the
radiator fan motor and condenser fan motor.
TECHNICAL DESCRIPTION
The cause could be a malfunction of the fan control module power supply or
ground circuit. The cause could also be a malfunction of the fan control module or the PCM.
TROUBLESHOOTING HINTS
Malfunction of fusible link Malfunction of fan control relay Malfunction of MFI relay Malfunction of fan control module Malfunction of PCM Damaged wiring harness or connector
DIAGNOSIS Required Special Tools:
MB991223: Harness Set MB991923: Power Plant ECU Check Harness
STEP 1. Check the circuit at fan control module connector A-23 (terminal
3).
1. Disconnect fan control module connector A-23, and measure at the
harness side connector.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

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

NO: Replace the radiator fan motor. Then go to Step 7.
STEP 7. Check the symptoms.
Q: Do the radiator fan and condenser fan operate correctly?
YES: The procedure is complete.
NO: Return to Step 1 .
INSPECTION PROCEDURE 5: Radiator Fan does not Operate TECHNICAL DESCRIPTION The cause could be a malfunction of the radiator fan motor or an open circuit
between the fan control module and the radiator fan motor. TROUBLESHOOTING HINTS Malfunction of radiator fan motor DIAGNOSIS Replace the radiator fan motor. INSPECTION PROCEDURE 6: Condenser Fan does not Operate Radiator Fan and Condenser Fan Drive Circuit Refer to INSPECTION PROCEDURE 3: RADIATOR FAN AND CONDENSER FAN DO NOT OPERATE
.
CIRCUIT OPERATION
The fan control module is powered from fusible link number 2. The PCM judges the required revolution speed of radiator fan motor and
condenser fan motor using the input signals transmitted from A/C switch,
automatic compressor controller, vehicle speed sensor and engine coolant
temperature sensor. The PCM activates the fan control module to drive the
radiator fan motor and condenser fan motor.
TECHNICAL DESCRIPTION
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

The cause could be a malfunction of the condenser fan motor or fan control module.TROUBLESHOOTING HINTS
Malfunction of condenser fan motor Malfunction of fan control module
DIAGNOSIS
STEP 1. Check the condenser fan motor.
Refer to CONDENSER AND CONDENSER FAN MOTOR
.
Q: Is the condenser fan motor in good condition?
YES: Go to Step 2.
NO: Replace the condenser fan motor, then go to Step 3 .
STEP 2. Check the fan control module.
Refer to FAN CONTROL MODULE CHECK
.
Q: Is the fan control module in good condition?
YES: Go to Step 3.
NO: Replace the radiator fan motor, then go to Step 3.
STEP 3. Check the symptoms.
Q: Does the condenser fan operate correctly?
YES: The procedure is complete.
NO: Return to Step 1 .
ON-VEHICLE SERVICE ENGINE COOLANT LEAK CHECK
WARNING:When pressure testing the cooling system, slowly
release cooling system pressure to avoid getting

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

2004 ENGINE
Engine - Endeavor
GENERAL DESCRIPTION The 6G75 (3.8L) engine is a six-cylinder engine. The cylinder numbers are assigned
as 1-3-5 for the right bank and 2-4-6 for the left bank from the front of the engine
(timing belt side). This engine is fired in the order of 1-2-3-4-5-6 cylinders.
Fig. 1: General Specification Table

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DIAGNOSIS
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor


2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor