RM3660EC _58 Vehicle Interior _080733 HEATING / AIR CONDITIONING _0591216 AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Mechanical Control Type) J

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Mechanical Control Type)  Recirculated/Fresh Air Modes do not Switch  


DESCRIPTION

If the air inlet mode cannot be changed between recirculation/fresh or exhaust gas odors can be smelled even though recirculation mode is selected, the following factors may be the cause.

Symptom Factor
·

Air inlet mode cannot be changed between recirculation/fresh

·

Exhaust gas odors can be smelled when air inlet mode set to recirculation mode


·

No. 1 blower damper servo sub-assembly malfunction

·

No. 2 heater control sub-assembly malfunction

·

Harness or connector



WIRING DIAGRAM

E419741E01
1.333,1.688 1.646,1.885 0.313,0.198 10 false IG+ 1.146,1.688 1.323,1.885 0.177,0.198 10 false 5 5.146,2.5 5.417,2.698 0.271,0.198 10 false 33 5.135,3 5.344,3.188 0.208,0.188 10 false 22 5.385,2.583 5.813,2.813 0.427,0.229 10 false FR 5.385,3.104 5.833,3.292 0.448,0.188 10 false LREC 2.26,4.156 2.458,4.365 0.198,0.208 10 false 5 4.573,4.156 4.771,4.365 0.198,0.208 10 false 2 4.583,4.698 4.781,4.906 0.198,0.208 10 false 1 4.177,2.99 4.594,3.198 0.417,0.208 10 false FRID 4.25,2.479 4.552,2.688 0.302,0.208 10 false F/R 5.396,4.281 5.854,4.469 0.458,0.188 10 false AIR 5.396,4.792 5.677,4.979 0.281,0.188 10 false AIF 5.208,4.698 5.406,4.906 0.198,0.208 10 false 7 5.146,4.167 5.344,4.375 0.198,0.208 10 false 23 0.958,0.406 2.021,0.615 1.063,0.208 10 false ECU-IG1 NO. 4 2.323,0.24 3.781,0.479 1.458,0.24 10 false from IG1-NO. 1 Relay 3.354,0.865 3.667,1.063 0.313,0.198 10 false +IG 3.854,0.865 4.167,1.063 0.313,0.198 10 false F/R 2.823,1.083 3.219,1.281 0.396,0.198 10 false OFF 2.875,1.333 3.271,1.531 0.396,0.198 10 false ON 1.823,3.625 4.052,3.854 2.229,0.229 10 false No. 2 Heater Control Sub-assembly 1.844,3.458 2.188,3.656 0.344,0.198 10 false I161 2.188,5.135 2.531,5.333 0.344,0.198 10 false B 2.177,5.302 4.802,5.51 2.625,0.208 10 false No. 1 Blower Damper Servo Sub-assembly 4.958,5.146 5.302,5.344 0.344,0.198 10 false I162 4.938,5.302 7.146,5.521 2.208,0.219 10 false Air Conditioning Amplifier Assembly 4.583,2.99 4.76,3.188 0.177,0.198 10 false 2 4.583,2.49 4.781,2.698 0.198,0.208 10 false 3 1.781,1.552 3.51,1.781 1.729,0.229 10 false Recirculation/Fresh Switch

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.


PROCEDURE

1.CHECK NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY
a.

Check that the No. 1 blower damper servo sub-assembly is installed correctly.

OK:

The No. 1 blower damper servo sub-assembly is installed correctly.



Result:
Proceed to
OK
NG



OK

2.INSPECT NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY

NG

INSTALL NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>BLOWER UNIT>REASSEMBLY


2.INSPECT NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY
a.

Remove the No. 1 blower damper servo sub-assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>BLOWER UNIT>DISASSEMBLY


b.

Inspect the No. 1 blower damper servo sub-assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>BLOWER UNIT>INSPECTION


Result:
Proceed to
OK
NG



OK

3.INSPECT NO. 2 HEATER CONTROL SUB-ASSEMBLY

NG

REPLACE NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>BLOWER UNIT>DISASSEMBLY


3.INSPECT NO. 2 HEATER CONTROL SUB-ASSEMBLY
a.

Remove the No. 2 heater control sub-assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL>REMOVAL


b.

Inspect the No. 2 heater control sub-assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL>INSPECTION


Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (NO. 2 HEATER CONTROL SUB-ASSEMBLY - IG POWER SOURCE)

NG

REPLACE NO. 2 HEATER CONTROL SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL>REMOVAL


4.CHECK HARNESS AND CONNECTOR (NO. 2 HEATER CONTROL SUB-ASSEMBLY - IG POWER SOURCE)
a.

Disconnect the I161 No. 2 heater control sub-assembly connector.


b.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
I161-5 (IG+) - Body ground Ignition switch off Below 1 V
I161-5 (IG+) - Body ground Ignition switch on (IG) 11 to 14 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (NO. 2 HEATER CONTROL SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (NO. 2 HEATER CONTROL SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)
a.

Disconnect the I162 air conditioning amplifier assembly connector.


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
I161-2 (FRID) - I162-22 (LREC) Always Below 1 Ω
I161-3 (F/R) - I162-33 (FR) Always Below 1 Ω
I161-2 (FRID) - I162-22 (LREC) - Other terminals and body ground Always 10 kΩ or higher
I161-3 (F/R) - I162-33 (FR) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY - IG POWER SOURCE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY - IG POWER SOURCE)
a.

Disconnect the B No. 1 blower damper servo sub-assembly connector.


b.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
B-5 - Body ground Ignition switch off Below 1 V
B-5 - Body ground Ignition switch on (IG) 11 to 14 V



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)
a.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
B-2 - I162-23 (AIR) Always Below 1 Ω
B-1 - I162-7 (AIF) Always Below 1 Ω
B-2 or I162-23 (AIR) - Other terminals and body ground Always 10 kΩ or higher
B-1 or I162-7 (AIF) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

GO TO ON-VEHICLE INSPECTION (CHECK REFRIGERANT PRESSURE USING GAUGE)

Click hereVehicle Interior>HEATING / AIR CONDITIONING>REFRIGERANT>ON-VEHICLE INSPECTION


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR