RM3660EC _58 Vehicle Interior _080733 HEATING / AIR CONDITIONING _0591215 AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type) J

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type)  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

E375276E09
2.625,0.594 3.479,0.833 0.854,0.24 10 false from Battery 2.052,1.115 3.469,1.344 1.417,0.229 10 false from IG1-NO. 1 Relay 3.979,0.75 4.885,0.958 0.906,0.208 10 false ECU-B NO. 2 3.927,1.271 4.99,1.479 1.063,0.208 10 false ECU-IG1 NO. 4 5.26,0.625 5.51,0.792 0.25,0.167 10 false B 5.25,1.125 5.656,1.323 0.406,0.198 10 false IG+ 5.26,2.385 5.667,2.583 0.406,0.198 10 false GND 5.063,0.49 5.313,0.656 0.25,0.167 10 false 5 5.063,1.01 5.323,1.188 0.26,0.177 10 false 6 5.021,2.26 5.281,2.438 0.26,0.177 10 false 17 0.583,2.906 2.781,3.115 2.198,0.208 10 false Air Conditioning Control Assembly 0.583,2.729 0.99,2.927 0.406,0.198 10 false I37 4.927,2.771 5.333,2.969 0.406,0.198 10 false I49 4.917,2.948 7.115,3.156 2.198,0.208 10 false Air Conditioning Amplifier Assembly 0.948,3.396 2.771,3.615 1.823,0.219 10 false : LIN Communication Line

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.CHECK FOR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.


e.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 121

Result:
Result Proceed to
B14B2 is not output A
B14B2 is output B



A

2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE AND BODY GROUND)

B

GO TO DTC B14B2

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type)>B14B2


2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE AND BODY GROUND)
E389752C03
1.5,0.333 1.948,0.594 0.448,0.26 2.729,2.781 2.604,2.063 true 0.49,2.792 0.833,2.073 true 1.313,2.771 0.99,2.073 true 1.625,0.385 2.083,0.583 0.458,0.198 10 false I49 2.615,2.844 3.073,3.042 0.458,0.198 10 false GND 0.396,2.833 0.573,3.021 0.177,0.188 10 false B 1.26,2.813 1.583,3.063 0.323,0.25 10 false IG+ 0.167,0.135 0.625,0.333 0.458,0.198 10 false *a
*a Front view of wire harness connector
(to Air Conditioning Amplifier Assembly)


a.

Disconnect the I49 air conditioning amplifier assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
I49-5 (B) - Body ground Always 11 to 14 V
I49-6 (IG+) - Body ground Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V


Standard Resistance:
Tester Connection Condition Specified Condition
I49-17 (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