Mitsubishi Grandis. Manual — part 297
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-73
(2) Turn the ignition switch to the "ON" position.
(3) Disconnect engine-ECU connector or
engine-A/T-ECU connector C-110 and earth
terminal 8.
(4) Voltage between terminal 1 and body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 13.
NO :
Go to Step 6.
Step 6. Check the A/C compressor relay
continuity.
Refer to GROUP 55, On vehicle service
−power
Q: Is the A/C compressor relay in good condition?
YES :
Go to Step 7.
NO :
Replace the A/C compressor relay.
Step 7. Voltage measurement at B-16X A/C
compressor relay connector.
(1) Remove the relay, and measure at the relay block
side.
(2) Turn the ignition switch to the "ON" position.
(3) Voltage between terminal 3 and body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Go to Step 8.
AC310615
AI
Harness side
Connector: C-110 <LHD>
C-110 (GR)
AC309471
AC309471
Connector C-110
(Harness side)
AF
AC310507AS
Connector B-120
(Harness side)
1
AC312170
A/C compressor relay
AC
Front of
vehicle
Connector: B-16X
Relay box side
AC301541HX
Connector B-16X
(Relay box side)
Front of
vehicle
1
3
2
4
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-74
Step 8. Check the wiring harness between B-16X
A/C compressor relay connector terminal No.3
and the ignition switch (IG2).
NOTE:
Prior to the wiring harness inspection, check junction
block connectors C-202, C-205, joint connector C-31
and intermediate connector C-17, and repair if
necessary.
• Check the A/C compressor relay power supply
line for open circuit.
Q: Is the check result normal?
AC312170
A/C compressor relay
AC
Front of
vehicle
Connector: B-16X
Relay box side
AC310615
AJ
Connector: C-17 <LHD>
AC310613
AP
Connector: C-31 <LHD>
AC310624
Connectors: C-202, C-205 <LHD>
AF
Junction block (Front view)
C-205
C-202
C-205
Harness side
C-202
Harness side
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-75
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
Step 9. Voltage measurement at B-16X A/C
compressor relay connector.
(1) Remove the relay, and measure at the relay block
side.
(2) Voltage between terminal 4 and body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Go to Step 10.
Step 10. Check the wiring harness between
B-16X A/C compressor relay connector terminal
No.4 and the fusible link (26).
NOTE:
Prior to the wiring harness inspection, check
intermediate connector A-16, and repair if necessary.
• Check the A/C compressor 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.
AC312170
A/C compressor relay
AC
Front of
vehicle
Connector: B-16X
Relay box side
AC301541HY
Connector B-16X
(Relay box side)
Front of
vehicle
1
3
2
4
AC312170
A/C compressor relay
AC
Front of
vehicle
Connector: B-16X
Relay box side
AC310403
AC
Connector: A-16 <LHD>
A-16 (B)
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-76
Step 11. Check the wiring harness between
B-16X A/C compressor relay connector terminal
No.2 and C-110 engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector terminal No.8.
• Check the A/C compressor relay power supply
line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 12.
NO :
Repair the wiring harness.
Step 12. Check the wiring harness between
B-16X A/C compressor relay connector terminal
No.1 and B-120 A/C compressor assembly
connector terminal No.1.
• Check the A/C compressor 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 13. Check the magnetic clutch operation.
Refer to
Q: Can the sound of the magnetic clutch (click) be
heard?
YES :
Go to Step 14.
NO :
Replace the compressor magnet clutch.
AC312170
A/C compressor relay
AC
Front of
vehicle
Connector: B-16X
Relay box side
AC310615
AI
Harness side
Connector: C-110 <LHD>
C-110 (GR)
AC312170
A/C compressor relay
AC
Front of
vehicle
Connector: B-16X
Relay box side
AC311219
Connector: B-120 <LHD>
AB
Harness side
B-120 (B)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст