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Heater & Automatic Air Conditioning: Diagnosis Nissan Juke I

Automatic HVAC System 2 illustrations ~5309 words

SELF-DIAGNOSIS RESULTS

Diagnosis result that is judged by A/C auto amp. can be checked. Refer to " DTC INDEX ".

ACTIVE TEST

The signals used to activate each device forcibly supplied from A/C auto amp. operation check of air conditioning system can be performed.

Test itemDescription
HVAC TESTThe operation check of air conditioning system can be performed by selecting the mode. Refer to the following table for the conditions of each mode.

Check each output device

Test item
MODE 1MODE 2MODE 3MODE 4MODE 5MODE 6MODE 7
Mode door motor positionVENTVENTB/LB/LFOOT (1)D/FDEF
Intake door motor positionRECRECREC20% FRE80% FREFREFRE
Air mix door motor positionFULL COLDFULL COLDFULL COLDMIDDLEMIDDLEFULL HOTFULL HOT
Blower motor (Applied voltage)5 V8.5 V10.5 V8.5 V8.5 V8.5 V13 V
Magnet clutchONONONONOFFOFFON
Blower motor (Blower fan ON signal transmitted to BCM)ONONONONOFFOFFON
(1) Position of mode door motor is set to the status of automatic control that is selected by foot position setting trimmer. Refer to " FOOT POSITION SETTING TRIMMER ".
(1)Position of mode door motor is set to the status of automatic control that is selected by foot position setting trimmer. Refer to " FOOT POSITION SETTING TRIMMER ".

Note. Perform the inspection of each output device after starting the engine because the compressor is operated.

DTC Index

DTCItems (CONSULT screen terms)Reference
U1000CAN COMM CIRCUIT" DTC LOGIC "
U1010CONTROL UNIT (CAN)" DTC LOGIC "
B2578IN-VEHICLE SENSOR" DTC LOGIC "
B2579IN-VEHICLE SENSOR" DTC LOGIC "
B257BAMBIENT SENOR" DTC LOGIC "
B257CAMBIENT SENOR" DTC LOGIC "
B2581INTAKE SENSOR" DTC LOGIC "
B2582INTAKE SENSOR" DTC LOGIC "
B2630 (1)SUNLOAD SENSOR" DTC LOGIC "
B2631 (1)SUNLOAD SENSOR" DTC LOGIC "
B27A0INTAKE DOOR MOTOR" DTC LOGIC "
B27A1INTAKE DOOR MOTOR" DTC LOGIC "
B27A2DR AIR MIX DOOR MOT" DTC LOGIC "
B27A3DR AIR MIX DOOR MOT" DTC LOGIC "
B27A4DR AIR MIX DOOR MOT" DTC LOGIC "
B27A5DR AIR MIX DOOR MOT" DTC LOGIC "
B27A6MODE DOOR MOTOR" DTC LOGIC "
B27A7MODE DOOR MOTOR" DTC LOGIC "
B27A8MODE DOOR MOTOR" DTC LOGIC "
B27A9MODE DOOR MOTOR" DTC LOGIC "
(1) Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diagnosis indicates even though the sunload sensor is functioning normally.
(1)Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diagnosis indicates even though the sunload sensor is functioning normally.
DTCDescription
DTC U1000CAN COMM CIRCUIT
DTC U1010CONTROL UNIT (CAN)
DTC B2578, B2579IN-VEHICLE SENSOR
DTC B257B, B257CAMBIENT SENSOR
DTC B2581, B2582INTAKE SENSOR
DTC B2630, B2631SUNLOAD SENSOR
DTC B27A0, B27A1INTAKE DOOR MOTOR
DTC B27A2, B27A3, B27A4, B27A5AIR MIX DOOR MOTOR
DTC B27A6, B27A7, B27A8, B27A9MODE DOOR MOTOR

DTC INDEX

DTC DETECTION LOGIC

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
U1000CAN COMM CIRCUITWhen A/C auto amp. is not transmitting or receiving CAN communication signal for 2 seconds or more.CAN communication system

DTC CONFIRMATION PROCEDURE

  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON and wait at least 2 seconds or more. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S19182890252012120600000) ". NO: Check intermittent incident. Refer to " «INTERMITTENT INCIDENT»(ref-516389-S36169925192012120600000) ".

Diagnosis Procedure

  1. CHECK CAN COMMUNICATION SYSTEM Check CAN communication system. Refer to " «TROUBLE DIAGNOSIS FLOW CHART»(ref-516393-S31211234242012120600000) ". INSPECTION END
DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
U1010CONTROL UNIT(CAN)When detecting error during the initial diagnosis of CAN controller of A/C auto amp.A/C auto amp.
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S25603410282012120600000) ". NO: INSPECTION END
  1. REPLACE A/C AUTO AMP. Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". INSPECTION END

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ".

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
B2578IN-VEHICLE SENSORThe in-vehicle sensor recognition temperature is too high [more than 100°C (212°F)].In-vehicle sensor A/C auto amp. Harness or connectors (The sensor circuit is open or shorted.)
B2579The in-vehicle sensor recognition temperature is too low [less than -42°C (-44°F)].
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S37415841132012120600000) ". NO: INSPECTION END
  1. CHECK IN-VEHICLE SENSOR POWER SUPPLY Turn ignition switch OFF. Disconnect in-vehicle sensor connector. Turn ignition switch ON. Check voltage between in-vehicle sensor harness connector and ground. + - Voltage (Approx.) In-vehicle sensor Connector Terminal M41 1 Ground 5 V Is the inspection result normal? YES: GO TO 2. NO: GO TO 4 .
  2. CHECK IN-VEHICLE SENSOR GROUND CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between in-vehicle sensor harness connector and A/C auto amp harness connector. In-vehicle sensor A/C auto amp. Continuity Connector Terminal Connector Terminal M41 2 M50 10 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK IN-VEHICLE SENSOR Check in-vehicle sensor. Refer to " «COMPONENT INSPECTION»(ref-516424-S03977985832012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace in-vehicle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S03219821792012120600000) ".
  4. CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector. In-vehicle sensor A/C auto amp. Continuity Connector Terminal Connector Terminal M41 1 M50 2 Existed Is the inspection result normal? YES: GO TO 5. NO: Repair harness or connector.
  5. CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between in-vehicle sensor harness connector and ground. In-vehicle sensor - Continuity Connector Terminal M41 1 Ground Not existed Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector.

Component Inspection

  1. CHECK IN-VEHICLE SENSOR Remove in-vehicle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S03219821792012120600000) ". Check resistance between in-vehicle sensor terminals. Refer to applicable table for the normal value. Terminal Condition Resistance: kohms Temperature: °C (°F) 1 2 -15 (5) 12.73 -10 (14) 9.92 -5 (23) 7.80 0 (32) 6.19 5 (41) 4.95 10 (50) 3.99 15 (59) 3.24 20 (68) 2.65 25 (77) 2.19 30 (86) 1.81 35 (95) 1.51 40 (104) 1.27 45 (113) 1.07 Is the inspection result normal? YES: INSPECTION END NO: Replace in-vehicle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S03219821792012120600000) ".

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ".

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
B257BAMBIENT SENSORThe ambient sensor recognition temperature is too high [more than 100°C (212°F)].Ambient sensor A/C auto amp. Harness or connectors (The sensor circuit is open or shorted.)
B257CThe ambient sensor recognition temperature is too low [less than -42°C (-44°F)].
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S35569508562012120600000) ". NO: INSPECTION END
  1. CHECK AMBIENT SENSOR POWER SUPPLY Turn ignition switch OFF. Disconnect ambient sensor connector. Turn ignition switch ON. Check voltage between ambient sensor harness connector and ground. + - Voltage (Approx.) Ambient sensor Connector Terminal E53 1 Ground 5 V Is the inspection result normal? YES: GO TO 2. NO: GO TO 4 .
  2. CHECK AMBIENT SENSOR GROUND CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between ambient sensor harness connector and A/C auto amp harness connector. Ambient sensor A/C auto amp. Continuity Connector Terminal Connector Terminal E53 2 M50 10 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK AMBIENT SENSOR Check ambient sensor. Refer to " «COMPONENT INSPECTION»(ref-516424-S05803772402012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace ambient sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S00128113092012120600000) ".
  4. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between ambient sensor harness connector and A/C auto amp. harness connector. Ambient sensor A/C auto amp. Continuity Connector Terminal Connector Terminal E53 1 M50 4 Existed Is the inspection result normal? YES: GO TO 5. NO: Repair harness or connector.
  5. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between ambient sensor harness connector and ground. Ambient sensor - Continuity Connector Terminal E53 1 Ground Not existed Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector.
  1. CHECK AMBIENT SENSOR Remove ambient sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S00128113092012120600000) ". Check resistance between ambient sensor terminals. Refer to applicable table for the normal value. Terminal Condition Resistance: kohms Temperature: °C (°F) 1 2 -15 (5) 12.73 -10 (14) 9.92 -5 (23) 7.80 0 (32) 6.19 5 (41) 4.95 10 (50) 3.99 15 (59) 3.24 20 (68) 2.65 25 (77) 2.19 30 (86) 1.81 35 (95) 1.51 40 (104) 1.27 45 (113) 1.07 Is the inspection result normal? YES: INSPECTION END NO: Replace ambient sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S00128113092012120600000) ".

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ".

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
B2581INTAKE SENSORThe intake sensor recognition temperature is too high [more than 100°C (212°F)].Intake sensor A/C auto amp. Harness or connectors (The sensor circuit is open or shorted.)
B2582The intake sensor recognition temperature is too low [less than -42°C (-44°F)].
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S05837700092012120600000) ". NO: INSPECTION END
  1. CHECK INTAKE SENSOR POWER SUPPLY Turn ignition switch OFF. Disconnect intake sensor connector. Turn ignition switch ON. Check voltage between intake sensor harness connector and ground. + - Voltage (Approx.) Intake sensor Connector Terminal M42 1 Ground 5 V Is the inspection result normal? YES: GO TO 2. NO: GO TO 4 .
  2. CHECK INTAKE SENSOR GROUND CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between intake sensor harness connector and A/C auto amp harness connector. Intake sensor A/C auto amp. Continuity Connector Terminal Connector Terminal M42 2 M50 10 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK INTAKE SENSOR Check intake sensor. Refer to " «COMPONENT INSPECTION»(ref-516424-S16060125022012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace intake sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S13002183372012120600000) ".
  4. CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between intake sensor harness connector and A/C auto amp. harness connector. Intake sensor A/C auto amp. Continuity Connector Terminal Connector Terminal M42 1 M50 3 Existed Is the inspection result normal? YES: GO TO 5. NO: Repair harness or connector.
  5. CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between intake sensor harness connector and ground. Intake sensor - Continuity Connector Terminal M42 1 Ground Not existed Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector.
  1. CHECK INTAKE SENSOR Remove intake sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S13002183372012120600000) ". Check resistance between intake sensor terminals. Refer to applicable table for the normal value. Terminal Condition Resistance: kohms Temperature: °C (°F) 1 2 -15 (5) 12.34 -10 (14) 9.62 -5 (23) 7.56 0 (32) 6.00 5 (41) 4.80 10 (50) 3.87 15 (59) 3.15 20 (68) 2.57 25 (77) 2.12 30 (86) 1.76 35 (95) 1.47 40 (104) 1.23 45 (113) 1.04 Is the inspection result normal? YES: INSPECTION END NO: Replace intake sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S13002183372012120600000) ".

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ". Sunload sensor may register a malfunction when indoors, at dusk, or at other times when light is insufficient. When performing the diagnosis indoors, use a lamp (60 W or more) that is pointed at the sunload sensor.

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
B2630SUNLOAD SENSORDetected calorie at sunload sensor 1677 W/m 2 (1442 kcal/m 2 .h) or more.Sunload sensor A/C auto amp. Harness or connectors (The sensor circuit is open or shorted.)
B2631Detected calorie at sunload sensor 33 W/m 2 (28 kcal/m 2 .h) or less.
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S11844689892012120600000) ". NO: INSPECTION END
  1. CHECK SUNLOAD SENSOR POWER SUPPLY Turn ignition switch OFF. Disconnect sunload sensor connector. Turn ignition switch ON. Check voltage between sunload sensor harness connector and ground. + - Voltage (Approx.) Sunload sensor Connector Terminal M74 1 Ground 5 V Is the inspection result normal? YES: GO TO 2. NO: GO TO 4 .
  2. CHECK SUNLOAD SENSOR GROUND CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between sunload sensor harness connector and A/C auto amp harness connector. Sunload sensor A/C auto amp. Continuity Connector Terminal Connector Terminal M74 2 M50 10 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK SUNLOAD SENSOR Disconnect A/C auto amp. connector. Check sunload sensor. Refer to " «COMPONENT INSPECTION»(ref-516424-S40911701732012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace sunload sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S31816898712012120600000) ".
  4. CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between sunload sensor harness connector and A/C auto amp. harness connector. Sunload sensor A/C auto amp. Continuity Connector Terminal Connector Terminal M74 1 M50 5 Existed Is the inspection result normal? YES: GO TO 5. NO: Repair harness or connector.
  5. CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between sunload sensor harness connector and ground. Sunload sensor - Continuity Connector Terminal M74 1 Ground Not existed Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector.

Scheme 76

Scheme 76: Component Inspection
Scheme 76: Component Inspection
  1. CHECK SUNLOAD SENSOR Turn ignition switch ON. Check voltage between A/C auto amp. harness connector and ground. Refer to applicable table for the normal value. A/C auto amp. Connector + - Terminal Terminal M50 5 30 NOTE: When checking indoors, use a lamp of approximately 60 W. Move the lamp towards and away from the sensor to check. The sunload amount produced by direct sunshine in fair weather is equivalent to approximately 0.77 kW/m 2 (662 kcal/m 2 .h). Is the inspection result normal? YES: INSPECTION END NO: Replace sunload sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S31816898712012120600000) ".

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ".

DTCItems (CONSULT screen terms)DTC detection condition (1)Possible cause
B27A0INTAKE DOOR MOTORPBR opening angle of intake door motor is 50% or more. (PBR feedback signal voltage of intake door motor is 2.5 V or more)Intake door motor Intake door motor system installation condition A/C auto amp. Harness or connectors (The motor circuit is open or shorted.)
B27A1PBR opening angle of intake door motor is 30% or less. (PBR feedback signal voltage of intake door motor is 1.5 V or less)
(1) A/C auto amp. operates intake door motor according to target value of PBR opening angle at 40% when performing self-diagnosis.
(1)A/C auto amp. operates intake door motor according to target value of PBR opening angle at 40% when performing self-diagnosis.
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Start engine. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S05530248452012120600000) ". NO: INSPECTION END
  1. CHECK INTAKE DOOR MOTOR OPERATION Turn ignition switch ON. Operate intake switch and check by operation sound that intake door motor operates. Does the intake door motor operate? YES: GO TO 2. NO: GO TO 8 .
  2. CHECK INTAKE DOOR MOTOR PBR POWER SUPPLY Disconnect intake door motor connector. Turn ignition switch ON. Check voltage between intake door motor harness connector and ground. + - Voltage (Approx.) Intake door motor Connector Terminal M54 1 Ground 5 V Is the inspection result normal? YES: GO TO 3. NO: GO TO 7 .
  3. CHECK INTAKE DOOR MOTOR PBR GROUND CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between intake door motor harness connector and A/C auto amp. harness connector. Intake door motor A/C auto amp. Continuity Connector Terminal Connector Terminal M54 3 M50 10 Existed Is the inspection result normal? YES: GO TO 4. NO: Repair harness or connector.
  4. CHECK INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN Check continuity between intake door motor harness connector and A/C auto amp. harness connector. Intake door motor A/C auto amp. Continuity Connector Terminal Connector Terminal M54 2 M50 22 Existed Is the inspection result normal? YES: GO TO 5. NO: Repair harness or connector.
  5. CHECK INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT Check continuity between intake door motor harness connector and ground. Intake door motor - Continuity Connector Terminal M54 2 Ground Not existed Is the inspection result normal? YES: GO TO 6. NO: Repair harness or connector.
  6. CHECK INTAKE DOOR MOTOR PBR Check intake door motor PBR. Refer to " «COMPONENT INSPECTION (PBR)»(ref-516424-S23375762922012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace intake door motor. Refer to " «INTAKE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S04678569792012120600000) ".
  7. CHECK INTAKE DOOR MOTOR PBR POWER SUPPLY CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between intake door motor harness connector and A/C auto amp. harness connector. Intake door motor A/C auto amp. Continuity Connector Terminal Connector Terminal M54 1 M50 8 Existed Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector.
  8. CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect intake door motor connector, and A/C auto amp. connector. Check continuity between intake door motor harness connector and A/C auto amp. harness connector. Intake door motor A/C auto amp. Continuity Connector Terminal Connector Terminal M54 5 M50 35 Existed 6 36 Is the inspection result normal? YES: GO TO 9. NO: Repair harness or connector.
  9. CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT Check continuity between intake door motor harness connector and ground. Intake door motor - Continuity Connector Terminal M54 5 Ground Not existed 6 Is the inspection result normal? YES: GO TO 10. NO: Repair harness or connector.
  10. CHECK INTAKE DOOR MOTOR Turn ignition switch OFF. Check intake door motor. Refer to " «COMPONENT INSPECTION (MOTOR)»(ref-516424-S12826015512012120600000) ". Is the inspection result normal? YES: GO TO 11. NO: Replace intake door motor. Refer to " «INTAKE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S04678569792012120600000) ".
  11. CHECK INSTALLATION OF INTAKE DOOR MOTOR SYSTEM Check intake door motor system is properly installed. Refer to " «EXPLODED VIEW»(ref-516424-S11071088852012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair or replace malfunctioning parts.

Component Inspection (PBR)

  1. CHECK INTAKE DOOR MOTOR PBR Check resistance between intake door motor terminals. Terminal Resistance (ohms) 1 2 Except 0 or infinity 3 Is the inspection result normal? YES: INSPECTION END NO: Replace intake door motor. Refer to " «INTAKE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S04678569792012120600000) ".

Component Inspection (Motor)

  1. CHECK INTAKE DOOR MOTOR Supply intake door motor terminals with battery voltage and check by visually and operation sound that intake door motor operates. Terminal Operation direction + - 5 6 REC 6 5 FRE Is the inspection result normal? YES: INSPECTION END NO: Replace intake door motor. Refer to " «INTAKE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S04678569792012120600000) ".

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ". If air mix door motors DTC (B27A2 - B27A5) are detected, there is probably a disconnected connector or an open circuit in air mix door motor drive power supply harness.

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
B27A2DR AIR MIX DOOR MOTShort or open circuit of air mix door motor drive signal terminal 1.Air mix door motor A/C auto amp. Harness or connectors (The motor circuit is open or shorted.)
B27A3Short or open circuit of air mix door motor drive signal terminal 2.
B27A4Short or open circuit of air mix door motor drive signal terminal 3.
B27A5Short or open circuit of air mix door motor drive signal terminal 4.
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S23874977772012120600000) ". NO: INSPECTION END
  1. CHECK AIR MIX DOOR MOTOR POWER SUPPLY Turn ignition switch OFF. Disconnect air mix door motor connector. Turn ignition switch ON. Check voltage between air mix door motor harness connector and ground. + - Voltage Air mix door motor Connector Terminal M55 2 Ground Battery voltage Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector between air mix door motor and fuse.
  2. CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between air mix door motor harness connector and A/C auto amp. harness connector. Air mix door motor A/C auto amp. Continuity Connector Terminal Connector Terminal M55 3 M50 17 Existed 6 18 1 19 4 20 Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT Check continuity between air mix door motor harness connector and A/C auto amp. harness connector. Air mix door motor - Continuity Connector Terminal M55 3 Ground Not existed 6 1 4 Is the inspection result normal? YES: GO TO 4. NO: Repair harness or connector.
  4. CHECK AIR MIX DOOR MOTOR Check air mix door motor. Refer to " «COMPONENT INSPECTION»(ref-516424-S30031427602012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace air mix door motor. Refer to " «AIR MIX DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S00879008962012120600000) ".
  1. CHECK AIR MIX DOOR MOTOR Remove air mix door motor. Refer to " «AIR MIX DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S00879008962012120600000) ". Check resistance between air mix door motor terminals. Refer to applicable table for the normal value. Terminal Resistance (ohms) (Approx.) 2 1 90 3 4 6 Is the inspection result normal? YES: INSPECTION END NO: Replace air mix door motor. Refer to " «AIR MIX DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S00879008962012120600000) ".

Note. If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to " DTC LOGIC ". If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. " DTC LOGIC ". If mode door motors DTC (B27A6 - B27A9) are detected, there is probably a disconnected connector or an open circuit in mode door motor drive power supply harness.

DTCItems (CONSULT screen terms)DTC detection conditionPossible cause
B27A6MODE DOOR MOTORShort or open circuit of mode door motor drive signal terminal 1.Mode door motor A/C auto amp. Harness or connectors (The motor circuit is open or shorted.)
B27A7Short or open circuit of mode door motor drive signal terminal 2.
B27A8Short or open circuit of mode door motor drive signal terminal 3.
B27A9Short or open circuit of mode door motor drive signal terminal 4.
  1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT Turn ignition switch ON. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT. Check DTC. Is DTC detected? YES: Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S41788518372012120600000) ". NO: INSPECTION END
  1. CHECK MODE DOOR MOTOR POWER SUPPLY Turn ignition switch OFF. Disconnect mode door motor connector. Turn ignition switch ON. Check voltage between mode door motor harness connector and ground. + - Voltage Mode door motor Connector Terminal M342 5 Ground Battery voltage Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector between mode door motor and fuse.
  2. CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect A/C auto amp. connector. Check continuity between mode door motor harness connector and A/C auto amp. harness connector. Mode door motor A/C auto amp. Continuity Connector Terminal Connector Terminal M342 4 M50 37 Existed 3 38 2 39 1 40 Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT Check continuity between mode door motor harness connector and A/C auto amp. harness connector. Mode door motor - Continuity Connector Terminal M342 4 Ground Not existed 3 2 1 Is the inspection result normal? YES: GO TO 4. NO: Repair harness or connector.
  4. CHECK MODE DOOR MOTOR Check mode door motor. Refer to " «COMPONENT INSPECTION»(ref-516424-S40695359352012120600000) ". Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Replace mode door motor. Refer to " «MODE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S38971446412012120600000) ".
  1. CHECK MODE DOOR MOTOR Remove mode door motor. Refer to " «MODE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S38971446412012120600000) ". Check resistance between mode door motor terminals. Refer to applicable table for the normal value. Terminal Resistance (ohms) (Approx.) 5 1 90 2 3 4 Is the inspection result normal? YES: INSPECTION END NO: Replace mode door motor. Refer to " «MODE DOOR MOTOR: REMOVAL AND INSTALLATION»(ref-516424-S38971446412012120600000) ".

A/C AUTO AMP.: Diagnosis Procedure

  1. CHECK SYMPTOM Check symptom (A or B). Symptom A Air conditioning system does not activate. Air conditioning system cannot be controlled. Operation status of air conditioning system is not indicated on display. NOTE: Fail-safe does not activate. B Memory function does not operate normally. The setting is not maintained. (It returns to the initial condition) Which symptom is detected? A >> GO TO 2. B >> GO TO 5 .
  2. CHECK FUSE Turn ignition switch OFF. Check 10A fuse (No. 3). NOTE: Refer to " «FUSE AND FUSIBLE LINK ARRANGEMENT»(ref-516406-S19263272092012120600000) ". Is the inspection result normal? YES: GO TO 3. NO: Replace the blown fuse after repairing the affected circuit if a fuse is blown.
  3. CHECK A/C AUTO AMP. IGNITION POWER SUPPLY Disconnect A/C auto amp. connector. Turn ignition switch ON. Check voltage between A/C auto amp. harness connector and ground. + - Voltage A/C auto amp. Connector Terminal M50 11 Ground Battery voltage Is the inspection result normal? YES: GO TO 4. NO: Repair harness or connector between A/C auto amp. and fuse.
  4. CHECK A/C AUTO AMP. GROUND CIRCUIT FOR OPEN Turn ignition switch OFF. Check continuity between A/C auto amp. harness connector and ground. A/C auto amp. - Continuity Connector Terminal M50 30 Ground Existed Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector.
  5. CHECK FUSE Turn ignition switch OFF. Check 10A fuse [No. 13, located in fuse block (J/B)]. NOTE: Refer to " «FUSE, CONNECTOR AND TERMINAL ARRANGEMENT»(ref-516406-S25916235262012120600000) ". Is the inspection result normal? YES: GO TO 6. NO: Replace the blown fuse after repairing the affected circuit if a fuse is blown.
  6. CHECK A/C AUTO AMP. BATTERY POWER SUPPLY Disconnect A/C auto amp. connector. Check voltage between A/C auto amp. harness connector and ground. + - Voltage A/C auto amp. Connector Terminal M50 12 Ground Battery voltage Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: Repair harness or connector between A/C auto amp. and fuse.
  1. CHECK A/C ON SIGNAL Turn ignition switch OFF. Disconnect A/C auto amp. connector. Turn ignition switch ON. Check output waveform between A/C auto amp. harness connector and ground with using oscilloscope. + - Output waveform A/C auto amp. Connector Terminal M50 15 Ground Is the inspection result normal? YES: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ". NO: GO TO 2.
  2. CHECK A/C ON SIGNAL CIRCUIT FOR OPEN Turn ignition switch OFF. Disconnect BCM connector. Check continuity between A/C auto amp. harness connector and BCM harness connector. A/C auto amp. BCM Continuity Connector Terminal Connector Terminal M50 15 M68 27 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair harness or connector.
  3. CHECK A/C ON SIGNAL CIRCUIT FOR SHORT Check continuity between A/C auto amp. harness connector and ground. A/C auto amp. - Continuity Connector Terminal M50 15 Ground Not existed Is the inspection result normal? YES: Replace BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-516421-S18255733352012120600000) ". NO: Repair harness or connector.

Component Inspection (Blower Motor)

  1. CHECK BLOWER MOTOR Remove blower motor. Refer to " «REMOVAL AND INSTALLATION»(ref-516438-S18287374322012120600000) ". Check that there is not any mixing foreign object in the blower motor. Is the inspection result normal? YES: GO TO 2. NO: Replace blower motor. Refer to " «REMOVAL AND INSTALLATION»(ref-516438-S18287374322012120600000) ".
  2. CHECK BLOWER MOTOR Check that there is not breakage or damage in the blower motor. Is the inspection result normal? YES: GO TO 3. NO: Replace blower motor. Refer to " «REMOVAL AND INSTALLATION»(ref-516438-S18287374322012120600000) ".
  3. CHECK BLOWER MOTOR Check that blower motor turns smoothly. Is the inspection result normal? YES: INSPECTION END NO: Replace blower motor. Refer to " «REMOVAL AND INSTALLATION»(ref-516438-S18287374322012120600000) ".

Scheme 77

Scheme 77: Component Inspection (Blower Relay)
Scheme 77: Component Inspection (Blower Relay)
  1. CHECK BLOWER RELAY Remove blower relay. Refer to " «FUSE, CONNECTOR AND TERMINAL ARRANGEMENT»(ref-516406-S25916235262012120600000) ". Check continuity between blower relay terminal 3 and 5 when the voltage is supplied between terminal 1 and 2. Terminal Voltage Continuity 3 5 ON Existed OFF Not existed Is the inspection result normal? YES: INSPECTION END NO: Replace blower relay.
  1. CHECK FUSE Turn ignition switch OFF. Check 10A fuse (No. 49, located in IPDM E/R). NOTE: Refer to " «FUSE, CONNECTOR AND TERMINAL ARRANGEMENT»(ref-516406-S32692208932012120600000) ". Is the inspection result normal? YES: GO TO 2. NO: Replace the blown fuse after repairing the affected circuit if a fuse is blown.
  2. CHECK MAGNET CLUTCH Disconnect compressor connector. Directly apply battery voltage to the magnet clutch. Check for operation visually and by sound. Does it operate normally? YES: GO TO 3. NO: Replace magnet clutch. Refer to " «MAGNET CLUTCH: REMOVAL AND INSTALLATION OF COMPRESSOR CLUTCH»(ref-516410-S26226648522012120600000) ".
  3. CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT FOR OPEN Disconnect IPDM E/R connector. Check continuity between IPDM E/R harness connector and compressor harness connector. IPDM E/R Compressor Continuity Connector Terminal Connector Terminal E15 56 F17 1 Existed Is the inspection result normal? YES: Replace IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-516417-S16607361272012120600000) ". NO: Repair harness or connector.

Symptom Table

Note. Perform self-diagnoses with CONSULT before performing the symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis.

SymptomCorresponding malfunction partCheck item/Reference
Air conditioning system does not activate. Air conditioning system cannot be controlled. Operation status of air conditioning system is not indicated on display.Fail-safe activatesMulti display unit" SYMPTOM TABLE "
Fail-safe does not activateA/C auto amp. ignition power supply and ground circuit A/C auto amp." A/C AUTO AMP.: DIAGNOSIS PROCEDURE "
Discharge air temperature does not change.Air mix door motor system installation conditionCheck air mix door motor system is properly installed. Refer to " EXPLODED VIEW ".
Air outlet does not change.Mode door motor system installation conditionCheck mode door motor system is properly installed. Refer to " EXPLODED VIEW ".
Air inlet does not change.Intake door motor system installation conditionCheck intake door motor system is properly installed. Refer to " EXPLODED VIEW ".
Blower motor does not operates or operation speed is not normal.Blower motor power supply circuit Blower motor control circuit A/C auto amp. ignition power supply circuit Power transistor power supply and ground circuit Power transistor control signal circuit Blower motor Power transistor A/C auto amp." DIAGNOSIS PROCEDURE "
Compressor does not operate.Magnet clutch The circuit between magnet clutch and IPDM E/R IPDM E/R (A/C relay) The circuit between ECM and refrigerant pressure sensor Refrigerant pressure sensor A/C ON signal circuit Blower fan ON signal circuit A/C auto amp." DIAGNOSIS PROCEDURE "
Insufficient cooling No cool air comes out. (Air flow volume is normal.)Magnet clutch control system Drive belt slipping Cooler cycle Air leakage from each duct A/C auto amp. connection recognition signal circuit Temperature setting trimmer" DIAGNOSIS PROCEDURE "
Insufficient heating No warm air comes out. (Air flow volume is normal.)Engine cooling system Heater hose Heater core Air leakage from each duct Temperature setting trimmer" DIAGNOSIS PROCEDURE "
Noise is heard when the A/C system operates.During compressor operationCooler cycle" SYMPTOM TABLE "
During blower motor operationMixing any foreign object in blower motor Blower motor fan breakage Blower motor rotation inferiority" COMPONENT INSPECTION (BLOWER MOTOR) "
Memory function does not operate normally. The setting is not maintained. (It returns to initial condition)A/C auto amp. battery power supply circuit A/C auto amp." A/C AUTO AMP.: DIAGNOSIS PROCEDURE "

Symptom

  1. Insufficient cooling
  2. No cool air comes out. (Air flow volume is normal.)

Note. Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis.

  1. CHECK MAGNET CLUTCH OPERATION Turn ignition switch ON. Operate fan control dial. Press A/C switch. Check that A/C indicator turns ON. Check visually and by sound that compressor operates. Press A/C switch again. Check that A/C indicator turns OFF. Check that compressor stops. Is the inspection result normal? YES: GO TO 2. NO: Perform diagnosis of "COMPRESSOR DOES NOT OPERATE" in "SYMPTOM DIAGNOSIS". Refer to " «DIAGNOSIS PROCEDURE»(ref-516424-S12616859522012120600000) ".
  2. CHECK DRIVE BELT Check tension of drive belt. Refer to " «INSPECTION»(ref-516394-S17584250522012120600000) ". Is the inspection result normal? YES: GO TO 3. NO: Adjust or replace drive belt depending on the inspection results.
  3. CHECK REFRIGERANT CYCLE PRESSURE Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge. Refer to " «SYMPTOM TABLE»(ref-516410-S03096831332012120600000) ". Is the inspection result normal? YES: GO TO 4. NO: Repair or replace parts depending on the inspection results.
  4. CHECK AIR LEAKAGE FROM EACH DUCT Check duct and nozzle, etc. of the air conditioning system for leakage. Is the inspection result normal? YES: GO TO 5. NO: Repair or replace parts depending on the inspection results.
  5. CHECK AMBIENT TEMPERATURE DISPLAY Check that there is not much difference between actual ambient temperature and indicated temperature on information display in combination meter. Is the inspection result normal? YES: GO TO 6. NO: Perform diagnosis for the A/C auto amp. connection recognition signal circuit. Refer to " «DIAGNOSIS PROCEDURE»(ref-516415-S22808659302012120600000) ".
  6. CHECK SETTING OF TEMPERATURE SETTING TRIMMER Check setting value of temperature setting trimmer. Refer to " «TEMPERATURE SETTING TRIMMER»(ref-516424-S24252605902012120600000) ". Check that temperature setting trimmer is set to "+ direction". NOTE: The control temperature can be set with the setting of the temperature setting trimmer. Set difference between the set temperature and control temperature to "0". Is inspection result normal? YES: INSPECTION END NO: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ".
  1. Insufficient heating
  2. No warm air comes out. (Air flow volume is normal.)

Note. Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis.

  1. CHECK COOLING SYSTEM Check engine coolant level and check for leakage. Refer to " «INSPECTION»(ref-516398-S11969614822012120600000) ". Check radiator cap. Refer to " «RADIATOR CAP: INSPECTION»(ref-516398-S41340709272012120600000) ". Check water flow sounds of the engine coolant. Refer to " «REFILLING»(ref-516398-S19078834252012120600000) ". Is the inspection result normal? YES: GO TO 2. NO: Refill engine coolant and repair or replace the parts depending on the inspection results.
  2. CHECK HEATER HOSE Check installation of heater hose by visually or touching. Is the inspection result normal? YES: GO TO 3. NO: Repair or replace parts depending on the inspection results.
  3. CHECK HEATER CORE Check temperature of inlet hose and outlet hose of heater core. Check that inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet side. CAUTION: Always perform the temperature inspection in a short period of time because the engine coolant temperature is very hot. Is the inspection result normal? YES: GO TO 4. NO: Replace heater core. Refer to " «HEATER CORE: REMOVAL AND INSTALLATION»(ref-516410-S01458390742012120600000) ".
  4. CHECK AIR LEAKAGE FROM EACH DUCT Check duct and nozzle, etc. of the air conditioning system for air leakage. Is the inspection result normal? YES: GO TO 5. NO: Repair or replace parts depending on the inspection results.
  5. CHECK SETTING OF TEMPERATURE SETTING TRIMMER Check setting value of temperature setting trimmer. Refer to " «TEMPERATURE SETTING TRIMMER»(ref-516424-S24252605902012120600000) ". Check that temperature setting trimmer is set to "- direction". NOTE: The control temperature can be set by the temperature setting trimmer. Set difference between the set temperature and control temperature to "0". Are the symptoms solved? YES: INSPECTION END NO: Replace A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-516424-S19583343652012120600000) ".

Compressor does not operate.

Note. Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis. Check that refrigerant is enclosed in cooler cycle normally. If refrigerant amount is shortage from proper amount, perform the inspection of refrigerant leakage.

  1. CHECK MAGNET CLUTCH OPERATION Check magnet clutch. Refer to " «COMPONENT FUNCTION CHECK»(ref-516424-S37361063362012120600000) ". Does it operate normally? YES: GO TO 2. NO: Repair or replace malfunctioning parts.
  2. CHECK REFRIGERANT PRESSURE SENSOR Check refrigerant pressure sensor. Refer to " «COMPONENT FUNCTION CHECK»(ref-516395-S06517465232012120600000) ". Is the inspection result normal? YES: GO TO 3. NO: Repair or replace malfunctioning parts.
  3. CHECK A/C ON SIGNAL Check A/C ON signal. Refer to " «COMPONENT FUNCTION CHECK»(ref-516424-S31418372822012120600000) ". Is inspection result normal? YES: GO TO 4. NO: Repair or replace malfunctioning parts.
  4. CHECK BLOWER FAN ON SIGNAL Check blower fan ON signal. Refer to " «COMPONENT FUNCTION CHECK»(ref-516424-S24455396032012120600000) ". Is the inspection result normal? YES: GO TO 5. NO: Repair or replace malfunctioning parts
  5. CHECK BCM OUTPUT SIGNAL With CONSULT Select "DATA MONITOR" mode of "ENGINE" using CONSULT. Select "AIR COND SIG" and "HEATER FAN SW", and check status under the following conditions. Monitor item Condition Status AIR COND SIG A/C switch OFF (A/C indicator: OFF) Off ON (A/C indicator: ON) On HEATER FAN SW Blower motor OFF Off ON On Is the inspection result normal? YES: Replace IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-516417-S16607361272012120600000) ". NO: Replace BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-516421-S18255733352012120600000) ".

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