Mitsubishi L200. Manual — part 851
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-20
STEP 6. Connector check: C-201 blower relay
connector
AC509934AT
Connector: C-201 <LHD>
Junction block side
Junction block (Front view)
AC509936AP
Connector: C-201 <RHD>
Junction block side
Junction block (Front view)
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the connector.
STEP 7. Check the blower relay continuity.
Refer to
.
Q: Is the blower relay continuity in good condition?
YES :
Go to Step 8.
NO :
Replace the blower relay.
STEP 8. Voltage measurement at C-201 blower
relay connector.
AC509934AT
Connector: C-201 <LHD>
Junction block side
Junction block (Front view)
AC509936AP
Connector: C-201 <RHD>
Junction block side
Junction block (Front view)
(1) Remove the relay, and measure at the junction
block side.
(2) Turn the ignition switch to the "ON" position.
AC402679
Connector C-201
(Harness side)
CH
(3) Measure the voltage between terminal 1 and
earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Go to Step 9.
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-21
STEP 9. Check the wiring harness between C-201
blower relay connector terminal No.1 and the
ignition switch (IG2).
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 power supply line for
open circuit.
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 :
Repair the wiring harness.
STEP 10. Measure the resistance at C-201 blower
relay connector.
AC509934AT
Connector: C-201 <LHD>
Junction block side
Junction block (Front view)
AC509936AP
Connector: C-201 <RHD>
Junction block side
Junction block (Front view)
(1) Remove the relay, and measure at the junction
block side.
AC403234
Connector C-201
(Harness side)
CG
(2) Measure the resistance Continuity between
terminal 2 and body earth.
OK: Continuity (Less than 2
Ω)
Q: Is the check result normal?
YES :
Go to Step 12.
NO :
Go to Step 11.
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-22
STEP 11. Check the wiring harness between C-
201 blower relay connector terminal No.2 and
earth.
AC509934 AV
Connectors: C-201, C-208 <LHD>
Junction block side
Junction block (Front view)
C-201
Harness side
C-208
C-201
C-208
AC509936 AR
Connectors: C-201, C-208 <RHD>
Junction block side
Junction block (Front view)
C-201
Harness side
C-208
C-201
C-208
NOTE: Prior to the wiring harness inspection, check
junction block connectors C-208, and repair if neces-
sary.
• Check the blower relay earth wires for open cir-
cuit.
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 :
Repair the wiring harness.
STEP 12. Measure the voltage at C-201 blower
relay connector.
AC509934AT
Connector: C-201 <LHD>
Junction block side
Junction block (Front view)
AC509936AP
Connector: C-201 <RHD>
Junction block side
Junction block (Front view)
(1) Remove the relay, and measure at the junction
block side.
AC402679
Connector C-201
(Harness side)
CI
(2) Measure the voltage between terminal 4 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 14.
NO :
Go to Step 13.
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-23
STEP 13. Check the wiring harness between C-
201 blower relay connector terminal No.4 and
fusible link (20).
AC509934 AW
Connectors: C-201, C-213 <LHD>
Junction block side
Junction block (Front view)
C-201
Harness side
C-213
C-201
C-213
AC509936AS
Connectors: C-201, C-213 <RHD>
Junction block side
Junction block (Front view)
C-201
Harness side
C-213
C-201
C-213
NOTE: Prior to the wiring harness inspection, check
junction block connector C-213, and repair if neces-
sary.
• Check the blower relay power supply line for
open circuit.
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 :
Repair the wiring harness.
STEP 14. 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 15.
NO :
Repair the connector.
STEP 15. Check the blower switch continuity.
Refer to
.
Q: Is the blower switch continuity in good condition?
YES :
Go to Step 16.
NO :
Replace the blower switch.
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