RM3090E _58 Vehicle Interior _008789 HEATING / AIR CONDITIONING _0049189 AIR CONDITIONING SYSTEM(for Manual Air Conditioning System) J

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Manual Air Conditioning System)  Recirculation Damper Servo Motor Circuit  


DESCRIPTION

The No. 1 blower damper servo sub-assembly and No. 1 heater control sub-assembly are powered through the HTR-IG fuse. Operating the No. 1 heater control sub-assembly drives the the No. 1 blower damper servo sub-assembly to switch between fresh and recirculation mode.

WIRING DIAGRAM

E253802E05
0.531,1.354 1.688,1.542 1.156,0.188 10 from HTR-IG Fuse 5.25,0.531 5.563,0.844 0.313,0.313 10 FRS 4.656,1 5.135,1.219 0.479,0.219 10 LOCK 4.656,0.76 5.115,0.969 0.458,0.208 10 FREE 6.188,0.531 6.51,0.823 0.323,0.292 10 REC 5.698,0.531 6.083,0.844 0.385,0.313 10 LED+ 3.823,2.448 4.354,2.688 0.531,0.24 10 A/C+ 6.344,3.354 6.563,3.729 0.219,0.375 10 4 3.635,2.448 3.823,2.719 0.188,0.271 10 2 3.635,2.677 3.833,2.979 0.198,0.302 10 3 3.635,2.917 3.823,3.281 0.188,0.365 10 5 1.427,2.531 1.802,2.885 0.375,0.354 10 IG+ 1.375,2.781 1.885,3.094 0.51,0.313 10 FRS 1.365,3.021 1.896,3.521 0.531,0.5 10 REC 1.771,2.448 2.052,2.792 0.281,0.344 10 5 1.771,2.677 2.052,2.938 0.281,0.26 10 2 1.771,2.917 2,3.188 0.229,0.271 10 1 0.656,3.375 1.073,3.75 0.417,0.375 10 G65 0.656,3.542 3.365,3.74 2.708,0.198 10 No. 1 Blower Damper Servo Sub-assembly 3.771,3.365 4.115,3.656 0.344,0.292 10 G22 3.771,3.51 5.969,3.708 2.198,0.198 10 No. 1 Heater Control Sub-assembly 3.823,2.677 4.354,2.917 0.531,0.24 10 FRS 3.823,2.917 4.354,3.156 0.531,0.24 10 LED+ 6.344,3.146 6.875,3.385 0.531,0.24 10 REC

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.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.

Connect a positive (+) lead from the battery to terminal 5 (IG+) and negative (-) lead to terminal 2 (FRS), then check that the arm turns to the fresh side smoothly.


c.

Connect a positive (+) lead from the battery to terminal 5 (IG+) and negative (-) lead to terminal 1 (REC), then check that the arm turns to the recirculation side smoothly.

E261703C03
1.219,2.115 1.469,1.708 false 1.573,2.125 1.823,1.719 false 2.302,2.104 2.01,1.719 false 4.75,0.115 5.115,0.417 0.365,0.302 10 *a 4.417,2.479 4.802,2.771 0.385,0.292 10 *b 1.104,2.135 1.438,2.396 0.333,0.26 10 IG+ 1.479,2.135 1.813,2.396 0.333,0.26 10 FRS 2.219,2.135 2.552,2.396 0.333,0.26 10 REC
*a Recirculation Position *b Fresh Position



Result:
Proceed to
OK
NG



OK

2.INSPECT NO. 1 HEATER CONTROL SUB-ASSEMBLY

NG

REPLACE RECIRCULATION DAMPER SERVO SUB-ASSEMBLY

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


2.INSPECT NO. 1 HEATER CONTROL SUB-ASSEMBLY
a.
E269925C01
1.74,3.167 2.51,2.615 2.51,2.615 2.885,2.615 true 2.125,1.323 2.365,1.688 2.365,1.688 2.594,1.688 true 1.948,1.333 2.208,1.927 2.208,1.927 2.438,1.927 true 1.792,1.323 1.604,1.948 1.604,1.948 1.313,1.948 true 1.615,1.333 1.406,1.688 1.406,1.688 1.115,1.688 true 2.948,2.542 3.26,2.74 0.313,0.198 10 *a 2.667,1.604 3.094,1.802 0.427,0.198 10 A/C+ 2.5,1.844 2.927,2.042 0.427,0.198 10 FRS 0.708,1.604 1.135,1.802 0.427,0.198 10 LED+ 0.958,1.865 1.302,2.063 0.344,0.198 10 REC
*a Recirculation/Fresh Switch


Measure the resistance.

i.

Remove the No. 1 heater control sub-assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL(for Manual Air Conditioning System)>REMOVAL


ii.

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

Standard Resistance:
Tester Connection Switch Condition Specified Condition
3 (FRS) - 4 (REC) Recirculation/fresh switch off Below 1 Ω
3 (FRS) - 4 (REC) Recirculation/fresh switch on 10 kΩ or higher
5 (LED+) - 4 (REC) Recirculation/fresh switch off 10 kΩ or higher
5 (LED+) - 4 (REC) Recirculation/fresh switch on Below 1 Ω




b.

Check that the indicator light comes on.

i.

Turn the recirculation/fresh switch to the on position.


ii.

Connect a positive (+) lead from the battery to terminal 2 (A/C+) and negative (-) lead to terminal 4 (REC), and check that the indicator light comes on.

OK:

The indicator light comes on.




Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY - BATTERY)

NG

REPLACE NO. 1 HEATER CONTROL SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL(for Manual Air Conditioning System)>DISASSEMBLY


3.CHECK HARNESS AND CONNECTOR (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY - BATTERY)
a.
E185641C01
1.365,0.271 1.865,0.583 0.5,0.313 2.208,1.521 2.438,1.833 false 0.115,0.083 0.396,0.302 0.281,0.219 10 *a 1.458,0.344 1.813,0.521 0.354,0.177 10 G65 2.469,1.781 2.781,1.958 0.313,0.177 10 IG+
*a Front view of harness connector
(to No. 1 Blower Damper Servo Sub-assembly)


Disconnect the 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 Switch Condition Specified Condition
G65-5 (IG+) - Body ground Ignition switch off Below 1 V
G65-5 (IG+) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - BATTERY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - BATTERY)
a.
E269926C01
1.5,0.333 1.906,0.604 0.406,0.271 0.875,1.854 1.115,1.854 1.115,1.854 1.344,1.469 true 1.573,0.396 2.031,0.594 0.458,0.198 10 G22 0.052,0.052 0.51,0.25 0.458,0.198 10 *a 0.5,1.771 0.885,1.958 0.385,0.188 10 A/C+
*a Front view of wire harness connector
(to No. 1 Heater Control Sub-assembly)


Disconnect the No. 1 heater control sub-assembly connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
G22-2 (A/C+) - Body ground Ignition switch off Below 1 V
G22-2 (A/C+) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - BODY GROUND)
a.
E269926C02
1.5,0.333 1.906,0.604 0.406,0.271 1.177,1.854 1.417,1.854 1.417,1.854 1.646,1.469 true 1.573,0.396 2.031,0.594 0.458,0.198 10 G22 0.052,0.052 0.51,0.25 0.458,0.198 10 *a 0.833,1.771 1.219,1.958 0.385,0.188 10 REC
*a Front view of wire harness connector
(to No. 1 Heater Control Sub-assembly)


Disconnect the No. 1 heater control sub-assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
G22-4 (REC) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY)
a.

Disconnect the G22 No. 1 heater control sub-assembly connector.


b.

Disconnect the G65 No. 1 blower damper servo sub-assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
G22-3 (FRS) - G65-2 (FRS) Always Below 1 Ω
G22-5 (LED+) - G65-1 (REC) Always Below 1 Ω
G22-3 (FRS) - Body ground Always 10 kΩ or higher
G22-5 (LED+) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM(for Manual Air Conditioning System)>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR