MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 152: Locating Connectors B
-16X And B
-114

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 14. Check the wiring harness between powertrain control module
connector B-20 (terminal 81) and A/C compressor clutch relay connector
B-16X (terminal 3).

Q: Is the wiring harness between powertrain control module connector B-
20 (terminal 81) and A/C compressor clutch relay connector B-16X
(terminal 3) in good condition?

YES:
It can be assumed that this malfunction is intermittent.
Refer to
HOW TO USE TROUBLESHOOTING/ INSPECTION
SERVICE POINTS
.
NO:
Re
pair the wirin
g harness. Check that the air con
ditionin
g works

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

normally.
Fig. 153: Locating Connector B
-16X

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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

Fig. 154: Locating Connector B
-20
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 15. Check A/C-ECU connector C-16 for loose, corroded or dama
ged
terminals, or terminals pushed back in the connector.

Q: Is A/C-ECU connector C-16 in good condition?

YES:
Go to Step 16.
NO:
Repair or replace the connector. Refer to
HARNESS
CONNECTOR INSPECTION
. Check that the air conditioning works
normally.

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

Fig. 155: Locating Connector C
-16
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 16. Measure the voltage at A/C-ECU connector C-16.

1. Disconnect A/C-ECU connector C-16 and measure the voltage at the relay
box side.

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

Fig. 156: Locating Connector C
-16
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

2. Disconnect powertrain control module connector B-20 and ground harness
side terminal No.81.
3. Turn the ignition switch to the "ON" position.

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

Fig. 157: Locating Connector B
-20
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

4. Measure the voltage between A/C-ECU connector C-16 terminal No.10
and
ground.

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

Fig. 158: Measuring Voltage Between Terminal No.10 And Ground

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

The measured value should be approximately 12 volts (battery
positive voltage).
Q: Does the measured voltage correspond with this range?

YES:
Go to Step 18 .
NO:
Go to Ste
p 17.

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

Fig. 159: Measuring Voltage Between Terminal 10 And Ground

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 17. Check the wiring harness between A/C compressor clutch relay
connector B-16X (terminal 4) and A/C-ECU connector C-16 (terminal 10).

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

Fig. 160: Locating Connector B
-16X

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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

Fig. 161: Locating Connector C
-16
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Is the wiring harness between A/C compressor clutch relay connector
B-16X (terminal 4) and A/C-ECU connector C-16 (terminal 10) in good
condition?

YES:
It can be assumed that this malfunction is intermittent.
NOTE: Also check intermediate connectors A-13 and C-24 for
loose, corroded, or damaged terminals, or terminals
pushed back in the connector. If intermediate connector
A-13 or C-24 is damaged, repair or replace the
connector as described in HARNESS CONNECTOR
INSPECTION
.

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