2004 MITSUBISHI ENDEAVOR check engine

Fig. 12: Identifying Power Plant ECU Check Harness (MB991923)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TEST B: RADIATOR FAN & CONDENSER FAN DO NOT CHANGE SPEED OR STOP Technical Description The fan control module has variable control of the radiator fan motor and the
condenser fan motor speeds using signals transmitted from the PCM. Troubleshooting Hints
Malfunction of fan control relay. Malfunction of fan control module. Malfunction of PCM.
Diagnosis 1. Check the fan control relay. See FAN CONTROL RELAY
under
COMPONENT TESTS. If fan control relay is okay, go to next step. If fan
control module is damaged, repair or replace as necessary and retest.
2. Check the harness wire between terminal No. 2 of fan control relay connector
A-10X and terminal No. 3 of fan control module connector A-18. See Fig. 7

and Fig. 8
. If wiring is damaged, repair or replace as necessary and retest. If
wiring is okay, go to next step.
3. Disconnect all the connectors from the PCM. Connect Power Plant ECU Check
Harness (MB991923
) between the PCM and the bod
y-side harness connector.
NOTE: If the engine coolant temperature reaches 230°F (110°C) or
higher, the radiator fan control runs the radiator fan for up
to 5 minutes even after the ignition switch is turned to the
LOCK position. The fan stops its rotation when the engine
coolant temperature decreases to 230°F (110°C) or l ower.
NOTE: Measure the output circuit voltage at terminal No. 10 of
PCM connector B-18 by using Power Plant ECU Check
Harness (MB991923). See Fig. 11
and Fig. 12
.

2004 Mitsubishi Endeavor Limited
2004 ENGINE COOLING Electric Cooling Fans - Endeavor

See Fig. 12
. Start the engine and allow it to idle. Measure the voltage between
terminal No. 10 of connector B-18 and ground. See Fig. 12
. If the voltage
when the radiator fan is not operating is more than 0.3V, go to next step. If the
voltage when the radiator fan is not operating is less than 0.3V, retest.
4. Check fan control module connector A-23 and PCM connector B-18 for loose,
corroded, or damaged terminals, or terminals pushed back in the connector.
See Fig. 7
and Fig. 11
. If connectors are okay, go to next step. If connectors
are damaged, repair or replace as necessary and retest.
5. Check the harness wire between terminal No. 10 of PCM connector B-18
(Green) and terminal No. 2 of fan control module connector A-23. See Fig. 7

and Fig. 11
. If wiring is damaged repair or replace as necessary and retest. If
wiring is okay, go to next step.
6. Disconnect PCM connector B-18 (Green). See Fig. 11
. Pull out pin No. 10 and
connect it to a body ground. Reconnect PCM connector with pin No. 10 still
removed. Turn the ignition switch to ON position. If the radiator fan motor and
condenser fan motor fan motor stop operating, replace the PCM and retest. If
the radiator fan motor and condenser fan motor do not stop operating, replace
the fan control module and retest.
TEST C: 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. Troubleshooting Hints
Malfunction of radiator fan motor.
Diagnosis If radiator fan does not operate, replace the radiator fan.
NOTE: Check terminal No. 7 of intermediate connector A-13,
repair it and then check wiring. See Fig. 9
.

2004 Mitsubishi Endeavor Limited
2004 ENGINE COOLING Electric Cooling Fans - Endeavor

TEST D: CONDENSER FAN DOES NOT OPERATETechnical Description The cause could be a malfunction of the condenser fan motor or an open circuit
between the fan control module and the radiator fan. Troubleshooting Hints
Malfunction of condenser fan motor. Malfunction of fan control module.
Diagnosis 1. Check the condenser fan motor. See CONDENSER FAN MOTOR
under
COMPONENT TESTS. If condenser fan motor is okay, go to next step. If
radiator fan motor is not okay, replace radiator fan motor and retest.
2. Check the fan control module. See FAN CONTROL MODULE
under
COMPONENT TESTS. If fan control module is okay, retest. If fan control
module is not okay, replace radiator fan motor and retest.
REMOVAL & INSTALLATION RADIATOR FAN Removal & Installation 1. Drain engine coolant.
2. Remove air cleaner.
3. Remove radiator grille.
4. Remove rubber hose. See Fig. 13
.
5. Remove radiator upper hose.
6. Disconnect fan motor connector.
7. Remove shroud assembly.
8. Remove radiator fan.
9. Remove radiator fan motor (integrated with fan control module).
10. Remove condenser fan.

2004 Mitsubishi Endeavor Limited
2004 ENGINE COOLING Electric Cooling Fans - Endeavor

2. Turn the ignition switch to the "ON" position.
3. Carry out inspection by means of the data list. If there is an abnormality, check
and repair the chassis harnesses and components. (Refer to DATA LIST
REFERENCE TABLE
).
4. Re-check using scan tool MB991958 and check to be sure that the abnormal
input and output have returned to normal because of the repairs.
5. Erase the diagnostic trouble codes.
6. Turn the ignition switch to the "LOCK" (OFF) position.
7. Disconnect scan tool MB991958.
8. Start the engine again and do a test drive to confirm that the problem is
eliminated.
HOW TO DIAGNOSE THE CAN BUS LINE REQUIRED SPECIAL TOOLS:
MB991958: Scan Tool (MUT-III Sub assembly)
MB991824: V.C.I. MB991827: USB Cable MB991910: Main Harness A
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 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor

Fig. 65: Checking Harness Wire

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the harness wire in good condition?
YES : Go to Step 14.
NO : Repair the damaged harness wire. Then go to Step 22 .
STEP 14. Check the fuse number 11 at the relay box in engine
compartment.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Auto, Cruise Control System - Endeavor

2004 BODY & ACCESSORIES
Rear Window Defogger - Endeavor
REAR WINDOW DEFOGGER GENERAL DESCRIPTION Rear Defogger operation The defogger relay turns ON if the defogger switch built-in the A/C-ECU is turned
ON when the ignition switch is in the "ON" position. When the defogger relay turns
ON, power is supplied to the defogger and the defogger is activated. The defogger
comes with a timer function that causes the defogger switch to automatically turn
OFF in about 17 minutes after the defogger switch is turned ON. EQUIPMENT DIAGNOSIS REAR WINDOW DEFOGGER DIAGNOSIS The rear window defogger is controlled by the A/C-ECU. For troubleshooting, refer
to MANUAL A/C DIAGNOSIS
.
ON-VEHICLE SERVICE PRINTED-HEATER LINES CHECK 1. Run the engine at 2,000 r/min. Check the heater element with the battery at
full.
2. Turn "ON" the rear window defogger switch. Measure the heater element
voltage with an ohmmeter at the rear window glass center A. Condition is good
if it indicates about 6 V.
2004 Mitsubishi Endeavor XLS
2004 BODY & ACCESSORIES Rear Window Defogger - Endeavor


2004 Mitsubishi Endeavor XLS
2004 BODY & ACCESSORIES Rear Window Defogger - Endeavor

Fig. 1: Bleeding Cooling System

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
ADJUSTMENTS CHECKING DRIVE BELTS Using a Scan Tool (Frequency) 1. Connect Belt Tension Meter Set (MB991668) to Scan Tool (MB991958). See
Fig. 2
.
2. Connect Scan Tool
(MB991958
) to the Data Link Connector
(DLC
). See Fi
g.
CAUTION: To prevent damage, always turn the ignition switch
to the LOCK position before connecting or
disconnecting Scan Tool (MB991958).

2004 Mitsubishi Endeavor Limited
2004 ENGINE COOLING Specifications & Drive Belt Routing - Endeavor

2 .
3. Turn the ignition switch to the ON position and select BELT TENSION
MEASUREMENT from the menu screen on Scan Tool (MB991958).
4. Hold Microphone (part of Belt Drive Meter Set) (MB991668) near the center
of the drive belt between the pulleys away from the rear surface of the belt and
perpendicular to the belt (no more then 15 degrees in either direction). See Fi
g.
3 and Fig. 4
.
5. Gently tap the middle of the belt between the pulleys with your finger, and
check that the vibration frequency of the belt is within specification. See Fig. 3
and Fig. 4
. See DRIVE BELT ADJUSTMENT SPECIFICATIONS
table.
CAUTION: Temperature of the surface of the belt should be
as close possible to underhood temperature.
CAUTION: DO NOT let contaminants such as water or oil get
onto the microphone. If strong gusts of wind
blow against the microphone or if there are any
loud sources of noise nearby, the values
measured by the microphone may not
correspond to actual values. DO NOT take
measurement while engine is running.

2004 Mitsubishi Endeavor Limited
2004 ENGINE COOLING Specifications & Drive Belt Routing - Endeavor