RM38N0EC _58 Vehicle Interior _111841 HEATING / AIR CONDITIONING _0499788 AIR CONDITIONING SYSTEM(for Gasoline Model) J

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model)  Operation not Accepted Even If Air Conditioning Switch is Operated  


DESCRIPTION

If the air conditioning system cannot be operated using the air conditioning control assembly, the following factors may be the cause.

Symptom Factor
Air conditioning system cannot be operated using air conditioning control assembly

(With the exception of the switch indicators, no inputs are reflected when other switches operated)


·

LIN communication malfunction between air conditioning amplifier assembly and air conditioning control assembly

·

Short to +B or ground in air conditioning amplifier assembly circuit

·

Air conditioning amplifier assembly malfunction

·

Air conditioning control assembly malfunction

·

Harness or connector



WIRING DIAGRAM

E480582E01
3.563,1.719 3.906,1.917 0.344,0.198 10 false IG+ 4.281,2.125 4.719,2.323 0.438,0.198 10 false LIN1 3.552,2.552 4.031,2.76 0.479,0.208 10 false GND 3.375,1.583 3.688,1.781 0.313,0.198 10 false 9 4.677,1.958 4.99,2.156 0.313,0.198 10 false 7 3.302,2.427 3.615,2.625 0.313,0.198 10 false 13 3.177,2.917 3.615,3.115 0.438,0.198 10 false E22 3.177,3.094 4.615,3.49 1.438,0.396 10 false Air Conditioning Control Assembly 5.115,2.125 5.552,2.323 0.438,0.198 10 false E44 5.271,3.042 6.823,3.427 1.552,0.385 10 false Air Conditioning Amplifier Assembly 5.531,2.135 5.969,2.333 0.438,0.198 10 false LIN1 5.208,1.896 5.479,2.083 0.271,0.188 10 false 7 0.688,3.396 2.344,3.604 1.656,0.208 10 false : LIN Communication Line 5.521,1.146 5.979,1.344 0.458,0.198 10 false GND 5.167,0.948 5.438,1.135 0.271,0.188 10 false 17 5.125,1.146 5.563,1.344 0.438,0.198 10 false E44 5.125,0.74 5.563,0.938 0.438,0.198 10 false E44 5.115,0.323 5.552,0.521 0.438,0.198 10 false E44 5.208,0.125 5.479,0.313 0.271,0.188 10 false 5 5.208,0.542 5.479,0.729 0.271,0.188 10 false 6 5.521,0.313 5.979,0.51 0.458,0.198 10 false B 5.531,0.729 5.99,0.927 0.458,0.198 10 false IG+ 3.677,0.458 4.719,0.698 1.042,0.24 10 false ECU-B NO. 2 3.604,0.885 4.74,1.115 1.135,0.229 10 false ECU-IGP NO. 3 2.052,0.729 3.458,0.958 1.406,0.229 10 false from IGP Relay 1.917,0.313 3.323,0.542 1.406,0.229 10 false from PDB-B Fuse 0.24,1.708 2.583,1.99 2.344,0.281 10 false from Engine Stop and Start ECU

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.CHECK FOR DTC
a.

Clear the DTC.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

b.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 450

Result:
Result Proceed to
B14B287 is not output A
B14B287 is output B



A

2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AUXILIARY BATTERY)

B

GO TO DTC B14B287

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>B14B287


2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AUXILIARY BATTERY)
a.

Disconnect the E44 air conditioning amplifier assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(E44)Location & Routing

Click Connector(E44)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Air Conditioning Amplifier Assembly

E44-5 (B) - Body ground Ignition switch off 11 to 14 V
E44-6 (IG+) - Body ground Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND)
a.

Disconnect the E44 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

Click Location & Routing(E44)Location & Routing

Click Connector(E44)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Air Conditioning Amplifier Assembly

E44-17 (GND) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR