Mitsubishi L200. Manual — part 852
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-24
STEP 16. Check the wiring harness between C-06
blower switch connector terminal No.3 and C-201
blower relay connector terminal No.3.
AC509611AW
Connector: C-06 <LHD>
Harness side
AC509932 BB
Harness side
Connector: C-06 <RHD>
AC509934 AU
Connectors: C-201, C-207 <LHD>
Junction block side
Junction block (Front view)
C-201
Harness side
C-207
C-201
C-207
AC509936 AQ
Connectors: C-201, C-207 <RHD>
Junction block side
Junction block (Front view)
C-201
Harness side
C-207
C-201
C-207
NOTE: Prior to the wiring harness inspection, check
junction block connector C-207, and repair if neces-
sary.
• Check the blower relay output line for open cir-
cuit.
Q: Is the check result normal?
YES :
Go to Step 17.
NO :
Repair the wiring harness.
STEP 17. Check the wiring harness between C-28
blower motor connector terminal No.1 and C-06
blower switch connector terminal No.5.
AC509611AW
Connector: C-06 <LHD>
Harness side
AC509932 BB
Harness side
Connector: C-06 <RHD>
AC509613AS
Harness side
Connector: C-28 <LHD>
AC509930AR
Harness side
Connector: C-28 <RHD>
• Check the blower motor power supply line for
open circuit.
Q: Is the check result normal?
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-25
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction ).
NO :
Repair the wiring harness.
STEP 18. Check the blower motor operation.
Refer to
.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction ).
NO :
Replace the blower motor.
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-26
Inspection Procedure 3: The blower air volume cannot be changed
Blower Motor Circuit
BLOWER
SWITCH
A/C TEMPERATURE
CONTROL RESISTOR
BLOWER
MOTOR
FUSIBLE
LINK
IGNITION
SWITCH (IG2)
BLOWER
RELAY
20
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple
Blower Motor Circuit
BLOWER
SWITCH
A/C TEMPERATURE
CONTROL RESISTOR
BLOWER
MOTOR
FUSIBLE
LINK
IGNITION
SWITCH (IG2)
BLOWER
RELAY
20
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple
AC900880
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-27
COMMENTS ON TROUBLE SYMPTOM
If the blower air amount cannot be changed when the
blower switch is operated, the blower switch may be
defective.
PROBABLE CAUSES
• Malfunction of the A/C temperature control resis-
tor
• Damaged the wiring harness or connectors
• Malfunction of the blower switch
DIAGNOSIS PROCEDURE
STEP 1. Check that the blower motor operates
when the blower switch is moved to the "4 (HI)"
position.
(1) Turn the ignition switch to the "ON" position.
(2) Turn the blower switch to the "4 (HI) " position.
Q: Does the blower motor operate when the blower
switch is moved to the "4 (HI)" position?
YES :
Go to Step 2.
NO :
Refer to Inspection procedure 2 "The blower
does not work
."
STEP 2. Connector check: C-06 blower switch
connector
AC509611AW
Connector: C-06 <LHD>
Harness side
AC509932 BB
Harness side
Connector: C-06 <RHD>
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the connector.
STEP 3. Check the blower switch continuity.
Refer to
.
Q: Is the blower switch continuity in good condition?
YES :
Go to Step 4.
NO :
Replace the blower switch.
STEP 4. Connector check: C-23 A/C temperature
control resistor connector
AC509611BE
Connector: C-23 <LHD>
Harness side
AC509932 BK
Harness side
Connector: C-23 <RHD>
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the connector.
STEP 5. Check the A/C temperature control
resistor resistance value.
Refer to
.
Q: Is the measured value at the standard value?
YES :
Go to Step 6.
NO :
Replace the A/C temperature control
resistor.
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