RM36D0EC _58 Vehicle Interior _083104 HEATING / AIR CONDITIONING _0402828 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 does not operate even when the air conditioning control assembly is operated, the following causes are possible.

Malfunction Status 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

·

Air conditioning amplifier assembly malfunction (+B or GND circuit)

·

Air conditioning control assembly malfunction

·

Harness or connector



WIRING DIAGRAM

E403238E03
5.615,0.479 6.073,0.677 0.458,0.198 10 false B 5.625,1.542 6.083,1.74 0.458,0.198 10 false LIN1 5.625,2.042 6.083,2.24 0.458,0.198 10 false GND 5.365,2.427 5.823,2.625 0.458,0.198 10 false G46 6.5,1.667 6.792,1.865 0.292,0.198 10 false AD 5.375,2.604 6.948,3.115 1.573,0.51 10 false Air Conditioning Amplifier Assembly 5.385,0.375 5.844,0.573 0.458,0.198 10 false 5 5.385,1.531 5.844,1.729 0.458,0.198 10 false 7 5.302,1.927 5.76,2.125 0.458,0.198 10 false 17 1.76,1.146 2.219,1.344 0.458,0.198 10 false 9 1.76,1.531 2.219,1.729 0.458,0.198 10 false 7 1.76,1.927 2.219,2.125 0.458,0.198 10 false 13 1.385,1.146 1.844,1.344 0.458,0.198 10 false IG+ 1.344,1.531 1.802,1.729 0.458,0.198 10 false LIN1 1.333,1.927 1.792,2.125 0.458,0.198 10 false GND 0.458,1.677 0.917,1.875 0.458,0.198 10 false CPU 0.323,2.448 0.781,2.646 0.458,0.198 10 false G24 0.313,2.594 1.802,2.979 1.49,0.385 10 false Air Conditioning Control Assembly 0.781,3.479 2.823,3.677 2.042,0.198 10 false : LIN Communication Line 4.083,1.01 5.094,1.219 1.01,0.208 10 false ECU-IG1 NO.4 2.406,0.844 3.969,1.063 1.563,0.219 10 false from IG1 NO.1 Relay 4.135,0.646 5.146,0.854 1.01,0.208 10 false ECU-B NO.2 2.938,0.458 3.813,0.667 0.875,0.208 10 false from Battery 5.635,0.875 6.094,1.073 0.458,0.198 10 false IG+ 5.385,0.76 5.844,0.958 0.458,0.198 10 false 6 2.635,1.24 4.823,1.469 2.188,0.229 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 DTC
a.

Clear the DTCs.

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 - BATTERY AND BODY GROUND)

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 - BATTERY AND BODY GROUND)
a.

Disconnect the G46 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
G46-17 (GND) - Body ground Always Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
G46-5 (B) - Body ground Always 11 to 14 V
G46-6 (IG+) - Body ground Ignition switch ON 11 to 14 V
G46-6 (IG+) - Body ground Ignition switch off Below 1 V



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