MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Q: Is the wiring harness between rear blower motor connector C-20
(terminal 1) and floor console rear A/C switch assembly connector C-19
(terminal 5) in good condition?

YES:
It can be assumed that this malfunction is intermittent.
Refer to
HOW TO USE TROUBLESHOOTING/INSPECTION
SERVICE POINTS
.
NO:
Repair the wiring harness. The rear blower motor should operate
normall
y.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 56: Identifying Connectors C
-19 And C
-20
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

INSPECTION PROCEDURE 13: REAR BLOWER AIR VOLUME CANNOT BE CHANGED
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 57: View Of Rear Blower Switch And Resistor Circuit

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

Fig. 58: Identifying Connectors C
-19, C
-20 And C
-21
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

CIRCUIT OPERATION If the blower motor speed cannot be changed, the resistor circuit is suspected. TROUBLESHOOTING HINTS
Malfunction of the resistor Malfunction of the floor console rear A/C switch assembly Dama
ged harness wires or connectors

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

DIAGNOSI
S
Required Special Tool:

MB991223: Test Harness Set STEP 1. Check resistor connector C-21 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.

Q: Is resistor connector C-21 in good condition?

YES:
Go to Step 2.
NO:
Repair or replace the connector. Refer to
HARNESS
CONNECTOR INSPECTION
. The rear blower motor should operate
normally.
Fig. 59: Locating Connector C
-21

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
STEP 2. Check the resistor operation.

1. Disconnect resistor connector C-21.
Fig. 60: Locating Connector C
-21
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

2. Use an ohmmeter to measure the resistance between the terminals. Check
that the measured value is at the standard value.
Standard value:

RESISTOR CONNECTOR C-21 STANDARD VALUE

MEASUREMENT TERMINAL
STANDARD VALUE
Between terminals 1 and 3 (ME)
2.2

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 61: Identifying Standard Value

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Is the measured value at the standard value?

YES:
Go to Step 3.
NO:
Replace the resistor. The rear blower motor should operate normally.
STEP 3. Check floor console rear A/C switch assembly connector C-19 for
loose, corroded or damaged terminals, or terminals pushed back in the
connector.

Q: Is floor console rear A/C switch assembly connector C-19 in good
Between terminals 1 and 6 (LO)
9.7

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

condition?

YES:
Go to Step 4.
NO:
Repair or replace the connector. Refer to
HARNESS
CONNECTOR INSPECTION
. The rear blower motor should operate
normally.
Fig. 62: Identifying Connector C
-19
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 4. Check the floor console rear A/C switch assembly operation.

1. Disconnect floor console rear A/C switch assembl
y connector
C-19.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 63: Locating Connector C
-19
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

2. Follow the table below to check the floor console rear A/C switch
assembl
y for continuit
y.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 64: Identifying Floor Console Rear A/C Switch Assembly

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

FLOOR CONSOLE REAR A/C SWITCH ASSEMBLY CONTINUITY
CHART

Q: Is the blower switch continuity in good condition?

YES:
Re
place the floor console rear A/C switch assembl
y.
SWITCH
POSITION
TESTER
CONNECTION
SPECIFIED
CONDITION
MIN
1 - 3, 3 - 5, 3 - 6
Open circuit
LO
3 - 6
Less than 2 ohms
ME
1 - 3
Less than 2 ohms
HI (MAX)
3 - 5
Less than 2 ohms

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor