NISSAN TIIDA 2009 Service Repair Manual

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Wiring Diagram - A/C,M -
INFOID:0000000004307066

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1. Turn blower control dial clockwise to "1" position. Blower should operate on low speed.
2. Turn blower control dial clockwise to "2" position, and continue checking blower speed until all speeds are
checked.
3. Leave blower on Maximum speed.
If NG, go to trouble diagnosis procedure for MTC-33, " Front Blower Motor Circuit " .
If OK, continue the check.
CHECKING DISCHARGE AIR 1. Turn mode door control dial to each position.
2. Confirm that discharge air comes out accord ing to the air distribution table. Refer to MTC-20, " Discharge
Air Flow " .
If NG, go to trouble diagnosis procedure for MTC-31, " Mode Door " .
If OK, continue the check.
CHECKING RECIRCULATION 1. Set intake door lever to REC position.
2. Operate intake door lever to FRE position.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to trouble diagnosis procedure for MTC-33, " Intake Door " .
If OK, continue the check.
CHECKING TEMPERATURE DECREASE 1. Turn temperature control dial counterclockwise to full cold position.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-45, " Insufficient Cooling " .
If OK, continue the check.
CHECKING TEMPERATURE INCREASE 1. Turn temperature control dial clockwise to full hot position.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-52, " Insufficient Heating " .
If OK, continue the check.
CHECKING A/C SWITCH (IF EQUIPPED) 1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Press A/C switch.
3. A/C switch indicator will turn ON. • Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for MTC-37, " Magnet Clutch Circuit (If Equipped) " .
If OK, continue the check.
CHECKING DEFROST A/C SWITCH (IF EQUIPPED) 1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Turn mode dial to ( ) DEF.
3. Confirm that the compressor clutch engages (sound or vi sual inspection) and the A/C switch indicator illu-
minates.
If NG, go to trouble diagnosis procedure for MTC-37, " Magnet Clutch Circuit (If Equipped) " .
If all operational checks are OK (symptom cannot be duplicated), go to MTC-22, " How to Perform Trouble
Diagnosis for Quick and Accurate Repair " and perform tests as outlined. If symptom appears, refer to
MTC-22," How to Perform Trouble Diagnosis for Quick and Accurate Repair " and perform applicable trouble diagnosis
procedures.
Mode Door INFOID:0000000004307068
SYMPTOM: Air outlet does not change.
INSPECTION FLOW

Discharge
Air Flow " .
NOTE:
Confirm that the compressor clutch (with A/C) is engaged (visual inspection) when DEF ( ) or D/F ( )
is selected.
Can a symptom be duplicated? YES >> GO TO 3.
NO >> GO TO 2. Operational Check " .
Can a symptom be duplicated? YES >> Refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
NO >> System OK. OK >> If the symptom still exists, perform a comple
te operational check and check for other symptoms.
Refer to MTC-30, " Operational Check " . If other symptoms exist, refer to
MTC-22, " How to Perform
Trouble Diagnosis for Quick and Accurate Repair " .
NG >> Repair or adjust mode door control cable. Refer to MTC-65, " Mode Door Cable Adjustment " .
Air Mix Door INFOID:0000000004307069
SYMPTOM: Air mix door does not change.
INSPECTION FLOW YES >> GO TO 4.
NO >> GO TO 3. Operational Check " .
Can a symptom be duplicated? YES >> Refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
NO >> System OK.

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>> GO TO 5. OK >> If the symptom still exists, perform a complete operational check. Refer to
MTC-30, " Operational
Check " If other symptoms exist, refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick
and Accurate Repair " .
NG >> Repair or adjust air mix door control linkage. Refer to MTC-64, " Air Mix Door Cable Adjustment " .
Intake Door INFOID:0000000004307070
SYMPTOM:
• Intake door does not change.
INSPECTION FLOW YES >> GO TO 3.
NO >> GO TO 2. Operational Check " .
Can a symptom be duplicated? YES >> Refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
NO >> System OK. OK >> If the symptom still exists, perform a complete operational check. Refer to
MTC-30, " Operational
Check " . If other symptoms exist, refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick
and Accurate Repair " .
NG >> Repair or adjust control linkage. Refer to MTC-63, " Intake Door Cable Adjustment " .
Front Blower Motor Circuit INFOID:0000000004307071
SYMPTOM: Front blower motor operation is malfunctioning.
INSPECTION FLOW YES >> GO TO 3.

Operational Check " .
Can a symptom be duplicated? YES >> Refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
NO >> System OK. OK >> If the symptom still exists, perform
a complete operational check. Refer to MTC-30, " Operational
Check " . If other symptoms exist, refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick
and Accurate Repair " .
NG >> Repair as necessary.
DIAGNOSTIC PROCEDURE FOR FRONT BLOWER MOTOR
SYMPTOM: Blower motor operation is malfunctioning. OK >> Inspection End.
NG >> • Front blower motor does not operate at any speed, GO TO 2.
• Front blower motor does not operate at one or more of the four speeds, GO TO 10.OK >> GO TO 6.

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NG >> Check power supply circuit and 15A fuses [Nos. 15 and 17, located in the fuse block (J/B)].
Refer to PG-3, " Schematic " .
• If fuses are OK, reinstall fuses and GO TO 3.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary. OK >> GO TO 4.
NG >> Repair harness or connector. OK >> GO TO 5.
NG >> Repair harness or connector. OK >> Replace blower motor relay.
NG >> Repair harness or connector. OK >> GO TO 7.
NG >> Replace front blower motor. Refer to MTC-62, " Removal
and Installation " .