RM35X0E _58 Vehicle Interior _079316 HEATING / AIR CONDITIONING _0386651 AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System)  B14BA  Open in Rear Ion Generator Circuit  


DESCRIPTION

The No. 2 ion generator sub-assembly operates when the blower switch is on. The air conditioning amplifier assembly sends a drive signal to the No. 2 ion generator sub-assembly. When the No. 2 ion generator sub-assembly receives the drive signal and starts to operate, it outputs an operation condition signal to the air conditioning amplifier assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B14BA Open in Rear Ion Generator Circuit
·

Diagnosis condition: Ignition switch ON, blower switch on and "nano" on

·

Malfunction status: Open in No. 2 ion generator sub-assembly circuit

·

Detection time: None (Present malfunction), continuously for 12 seconds or more (Past malfunction)


·

No. 2 ion generator sub-assembly

·

Harness or connector

·

Air conditioning amplifier assembly


Memorized

WIRING DIAGRAM

E418836E02
0.26,0.26 1.625,0.51 1.365,0.25 10 false from IG1 NO.3 Relay 2.573,0.177 2.729,0.375 0.156,0.198 10 false 1 2.792,0.271 3.104,0.469 0.313,0.198 10 false RIG 2.552,1.479 2.708,1.677 0.156,0.198 10 false 4 2.75,1.583 3.208,1.781 0.458,0.198 10 false RGND 4.438,0.385 4.594,0.583 0.156,0.198 10 false 3 4,0.385 4.458,0.583 0.458,0.198 10 false RIG+ 3.969,1.375 4.427,1.573 0.458,0.198 10 false RPCL 4.438,1.385 4.594,1.583 0.156,0.198 10 false 2 5.323,1.385 5.938,1.583 0.615,0.198 10 false RNNO 5.063,1.396 5.281,1.583 0.219,0.188 10 false 16 5.052,0.385 5.365,0.583 0.313,0.198 10 false 18 5.323,0.385 5.938,0.583 0.615,0.198 10 false RNIN 6.083,1.521 6.396,1.719 0.313,0.198 10 false IC 2.458,2.208 2.771,2.406 0.313,0.198 10 false a31 2.458,2.365 4.677,2.573 2.219,0.208 10 false No. 1 Ion Generator Sub-assembly 4.792,2.125 5.25,2.323 0.458,0.198 10 false N79 4.792,2.292 7.01,2.542 2.219,0.25 10 false Air Conditioning Amplifier Assembly 6.073,0.135 6.385,0.333 0.313,0.198 10 false 5 V 3.271,1.802 3.885,2 0.615,0.198 10 false Nano

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.PERFORM ACTIVE TEST USING GTS (ION GENERATOR)
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 / Active Test.


e.

Check the operation by referring to the table below.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Ion Generator Ion generator OFF/ON -
Body Electrical > Air Conditioner > Active Test
Tester Display
Ion Generator
50004 121 94
OK:

The ion generator operating sound can be heard for 12 seconds or more according to the Active Test.



Result:
Proceed to
OK
NG



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

2.CHECK HARNESS AND CONNECTOR (NO. 2 ION GENERATOR SUB-ASSEMBLY - POWER SOURCE AND BODY GROUND)
2.CHECK HARNESS AND CONNECTOR (NO. 2 ION GENERATOR SUB-ASSEMBLY - POWER SOURCE AND BODY GROUND)
a.
E293154C30
1.458,0.365 1.958,0.615 0.5,0.25 0.833,1.802 1.094,1.802 1.094,1.802 1.354,1.51 true 2.583,1.771 2.354,1.771 2.354,1.771 2.063,1.521 true 2.646,1.677 3.104,1.875 0.458,0.198 10 false RGND 0.073,0.052 0.531,0.25 0.458,0.198 10 false *a 0.51,1.719 0.969,1.917 0.458,0.198 10 false RIG 1.583,0.396 2.042,0.594 0.458,0.198 10 false a31
*a Front view of air conditioning harness assembly
(to No. 2 Ion Generator Sub-assembly)


Disconnect the No. 2 ion generator sub-assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
a31-4 (RGND) - 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
a31-1 (RIG) - Body ground Ignition switch off Below 1 V
a31-1 (RIG) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (NO. 2 ION GENERATOR SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (NO. 2 ION GENERATOR SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)
a.

Disconnect the a31 No. 2 ion generator sub-assembly connector.


b.

Disconnect the N79 air conditioning amplifier assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N79-18 (RNIN) - a31-3 (RIG+) Always Below 1 Ω
N79-16 (RNNO) - a31-2 (RPCL) Always Below 1 Ω
N79-18 (RNIN) or a31-3 (RIG+) - Other terminals and body ground Always 10 kΩ or higher
N79-16 (RNNO) or a31-2 (RPCL) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK NO. 2 ION GENERATOR SUB-ASSEMBLY (OUTPUT)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK NO. 2 ION GENERATOR SUB-ASSEMBLY (OUTPUT)
a.

Disconnect the air conditioning amplifier assembly connector.


b.
E421591C01
1.469,0.198 1.969,0.448 0.5,0.25 1.531,1.365 1.792,2.01 1.792,2.01 2.125,2.01 true 2.198,1.917 2.656,2.115 0.458,0.198 10 false RNNO 1.573,0.24 2.031,0.438 0.458,0.198 10 false N79 0.063,0.063 0.521,0.26 0.458,0.198 10 false *a
*a Front view of air conditioning harness assembly
(to Air Conditioning Amplifier Assembly)


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N79-16 (RNNO) - Body ground Ignition switch ON 4.75 to 5.25 V



Result:
Proceed to
OK
NG



OK

5.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

REPLACE NO. 2 ION GENERATOR SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>ION GENERATOR (for Rear)>REMOVAL


5.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
a.
E407115C14
0.063,0.375 0.563,0.625 0.5,0.25 1.917,1.198 2.219,1.948 2.219,1.948 2.552,1.948 true 2.615,1.854 3.073,2.052 0.458,0.198 10 false RNNO 0.188,0.417 0.646,0.615 0.458,0.198 10 false N79 0.063,0.063 0.521,0.26 0.458,0.198 10 false *a
*a Component with harness connected
(Air Conditioning Amplifier Assembly)


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N79-16 (RNNO) - Body ground
·

Ignition switch ON

·

Blower switch: LO

·

"nano": On


Below 1 V



Result:
Proceed to
OK
NG



OK

6.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


6.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
a.
E293154C31
1.458,0.365 1.958,0.615 0.5,0.25 2.281,1.958 2.052,1.958 2.052,1.958 1.833,1.563 true 0.073,0.052 0.531,0.25 0.458,0.198 10 false *a 2.344,1.875 2.802,2.073 0.458,0.198 10 false RIG+ 1.573,0.406 2.031,0.604 0.458,0.198 10 false a31
*a Front view of air conditioning harness assembly
(to No. 2 Ion Generator Sub-assembly)


Disconnect the No. 2 ion generator sub-assembly connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
a31-3 (RIG+) - Body ground Ignition switch ON 4.71 to 5.25 V



Result:
Proceed to
OK
NG



OK

7.CHECK NO. 2 ION GENERATOR SUB-ASSEMBLY

NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


7.CHECK NO. 2 ION GENERATOR SUB-ASSEMBLY
a.
E407115C13
0.063,0.375 0.563,0.625 0.5,0.25 1.615,1.219 2.083,1.948 2.083,1.948 2.417,1.948 true 2.479,1.865 2.938,2.063 0.458,0.198 10 false RNIN 0.188,0.417 0.646,0.615 0.458,0.198 10 false N79 0.063,0.063 0.521,0.26 0.458,0.198 10 false *a
*a Component with harness connected
(Air Conditioning Amplifier Assembly)


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N79-18 (RNIN) - Body ground
·

Ignition switch ON

·

Blower switch: LO

·

"nano": On


Below 2.2 V



Result:
Proceed to
OK
NG



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

REPLACE NO. 2 ION GENERATOR SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>ION GENERATOR (for Rear)>REMOVAL