Page 517 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-33
STEP 9. Check the wiring harness between C-214
blower relay connector terminal No.3 and the
ignition switch (IG2).
NOTE: Prior to the wiring harness inspection, check
junction block connector C-210, and repair if
necessary.
•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 P.00-5).
NO : Repair the wiring harness.
STEP 10. Resistance measurement at C-214
blower relay connector.
(1) Remove the relay, and measure at the junction
block side.
(2) Measure the resistance Continuity between
terminal 1 and body earth.
OK: 2 ohms or less
Q: Is the check result normal?
YES :
Go to Step 13.
NO : Go to Step 11.
NO : Go to Step 12.
AC303809
Connectors: C-210, C-214
AL
C-214
C-210
Junction block (front view)
C-210 Harness side
Junction block side
C-214
AC303823
Junction block side Junction block (front view)
Connectors: C-210, C-214
C-210C-214 Harness side
C-214
C-210
AK
AC303808
Junction block side Junction block (front view)
Connector: C-214
AL
AC303822
Junction block side Junction block (front view)
Connector: C-214
AM
AC301541EJ
Connector C-214
(Junction block side)
3
4
5
12
Page 518 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-34
STEP 11. Check the wiring harness between
C-214 blower relay connector terminal No.1 and
earth.
NOTE: Prior to the wiring harness inspection, check
junction block connectors C-212, and repair if
necessary.
•Check the blower relay earth wires 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 P.00-5).
NO : Repair the wiring harness.
STEP 12. Check the wiring harness between
C-214 blower relay connector terminal No.1 and
earth.
NOTE:
Prior to the wiring harness inspection, check junction
block connectors C-212 and joint connectors C-07,
and repair if necessary.
•Check the blower relay earth wires 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 P.00-5).
NO : Repair the wiring harness.
AC303809
Junction block (front view)
Connectors: C-212, C-214
C-212C-214
AP
C-212
Harness side
Junction block side
C-214
AC303823
Connectors: C-212, C-214
AO
Junction block (front view)
C-214C-212Junction block side
C-214
C-212
Harness side
AC303814
Connector: C-07
AR
Page 519 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-35
STEP 13. Voltage measurement at C-214 blower
relay connector.
(1) Remove the relay, and measure at the junction
block side.
(2) Measure the voltage between terminal 5 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 16.
NO : Go to Step 14.
NO : Go to Step 15.
STEP 14. Check the wiring harness between
C-214 blower relay connector terminal No.5 and
fusible link (1).
NOTE:
Prior to the wiring harness inspection, check
intermediate connectors C-21 and junction block
connector C-211, and repair if necessary.
•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 P.00-5).
NO : Repair the wiring harness.
AC303808
Junction block side Junction block (front view)
Connector: C-214
AL
AC303822
Junction block side Junction block (front view)
Connector: C-214
AM
AC301541EK
Connector C-214
(Junction block side)
3
4
5
12
AC303809
Connectors: C-211, C-214
AN
C-214
C-211
Junction block (front view)
C-211 Harness side
Junction block side
C-214
AC303798
Connector: C-21
AK
Page 520 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-36
STEP 15. Check the wiring harness between
C-214 blower relay connector terminal No.5 and
fusible link (1).
NOTE:
Prior to the wiring harness inspection, check
intermediate connectors C-121, C-138 and junction
block connector C-211, and repair if necessary.
•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 P.00-5).
NO : Repair the wiring harness.
STEP 16. Connector check: C-140 blower switch
connector
Q: Is the check result normal?
YES :
Go to Step 17.
NO : Repair the connector.
STEP 17. Check the blower switch continuity.
Refer to P.55-79.
Q: Is the blower switch continuity in good condition?
YES :
Go to Step 18.
NO : Replace the blower switch.
AC303823
Connectors: C-211, C-214
AL
C-214
C-211
Junction block (front view)
C-211 Harness side
Junction block side
C-214
AC303816
Connector: C-121
AB
AC303818
Connector: C-138
AI
AC303802
Connector: C-140
AF
Harness side
AC303818
Connector: C-140
AK
Harness side
Page 521 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-37
STEP 18. Check the wiring harness between
C-140 blower switch connector terminal No.2 and
C-214 blower relay connector terminal No.4.
NOTE: Prior to the wiring harness inspection, check
junction block connectors C-210, and repair if
necessary.
•Check the blower relay output line for open
circuit.
Q: Is the check result normal?
YES :
Go to Step 19.
NO : Repair the wiring harness.
AC303802
Connector: C-140
AF
Harness side
AC303818
Connector: C-140
AK
Harness side
AC303809
Connectors: C-210, C-214
AL
C-214
C-210
Junction block (front view)
C-210 Harness side
Junction block side
C-214
AC303823
Junction block side Junction block (front view)
Connectors: C-210, C-214
C-210C-214 Harness side
C-214
C-210
AK
Page 529 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-45
STEP 4. Connector check: C-213 rear window
defogger relay connector
Q: Is the check result normal?
YES :
Go to Step 5.
NO : Repair the connector.
STEP 5. Check the rear window defogger relay
continuity.
Refer to P.54A-96.
Q: Is the rear window defogger relay continuity in
good condition?
YES :
Go to Step 6.
NO : Replace the rear window defogger relay.
STEP 6. Voltage measurement at C-213 rear
window defogger relay connector.
(1) Remove the relay, and measure at the junction
block side.
(2) Measure the voltage between terminal 5 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 9.
NO : Go to Step 7.
NO : Go to Step 8.
AC303808
Junction block side Junction block (front view)
Connector: C-213
AK
AC303822
Junction block side Junction block (front view)
Connector: C-213
AL
AC303808
Junction block side Junction block (front view)
Connector: C-213
AK
AC303822
Junction block side Junction block (front view)
Connector: C-213
AL
AC301541EN
Connector C-213
(Junction block side)
3
4
5
12
Page 530 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-46
STEP 7. Check the wiring harness between C-213
rear window defogger relay connector terminal
No.5 and the fusible link (1).
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-21 and junction block
connector C-211, and repair if necessary.
•Check the rear window defogger 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 P.00-5).
NO : Repair the wiring harness.
STEP 8. Check the wiring harness between C-213
rear window defogger relay connector terminal
No.5 and the fusible link (1).
NOTE:
AC303809
Connectors: C-211, C-213
AM
C-213
C-211
Junction block (front view)
C-211 Harness side
Junction block side
C-213
AC303798
Connector: C-21
AK
AC303823
Connectors: C-211, C-213
AM
C-213
C-211
Junction block (front view)
C-211 Harness side
Junction block side
C-213
AC303816
Connector: C-121
AB
AC303818
Connector: C-138
AI
Page 531 of 788
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-47
Prior to the wiring harness inspection, check
intermediate connector C-121 and C-138 and
junction block connector C-211, and repair if
necessary.
•Check the rear window defogger 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 P.00-5).
NO : Repair the wiring harness.
STEP 9. Voltage measurement at C-213 rear
window defogger relay connector.
(1) Remove the relay, and measure at the junction
block side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 3 and
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
C-213 rear window defogger relay connector
terminal No.3 and ignition switch (IG2).
AC303808
Junction block side Junction block (front view)
Connector: C-213
AK
AC303822
Junction block side Junction block (front view)
Connector: C-213
AL
AC301541EO
Connector C-213
(Junction block side)
3
4
5
12
AC303809
Connectors: C-210, C-213
AK
C-213
C-210
Junction block (front view)
C-210 Harness side
Junction block side
C-213
AC303823
Junction block side Junction block (front view)
Connectors: C-210, C-213
C-210C-213 Harness side
C-213
C-210
AI
