Climate Control System does not Operate on Driver Side [10/2023 - ]: Procedure

1. Using the Techstream, perform the Active Test.

   Body Electrical > Air Conditioner > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Front Left Seat Blower	Front seat LH side seat climate control operation	OFF/ON	-

   Body Electrical > Air Conditioner > Active Test 

   Tester Display
   Front Left Seat Blower

   Result

   Result	Proceed to
   Both climate control blowers (driver seat) operate	A
   Only seat cushion climate control blower assembly (driver seat) does not operate	B
   Only seatback climate control blower (driver seat) does not operate	C
   Both climate control blowers (driver seat) do not operate	D

Result: 

B 

REPLACE SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY (DRIVER SEAT). Refer to  DISASSEMBLY [10/2023 - ] 

Result: 

C 

See step  6

Result: 

D 

See step  9

Result: 

A 

See step  2

1. Check the vehicle type.

   Result

   Result	Proceed to
   w/ Audio	A
   w/o Audio	B

Result: 

B 

See step  4

Result: 

A 

See step  3

1. Check that the driver seat climate control seat operates normally by operating the multi-display assembly or the refrating seat switch.

   Refer to ON-VEHICLE INSPECTION [10/2022 - ] 

   Result

   Result	Proceed to
   Multi-display assembly and refreshing seat switch operation does not operate.	A
   Multi-display assembly operation does not operate.	B
   Refreshing seat switch operation does not operate.	C

Result: 

A 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2017 - ] 

Result: 

B 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

C 

REPLACE REFRESHING SEAT SWITCH. Refer to  REMOVAL [10/2022 - ] 

1. Temporarily replace the refreshing seat switch with a new or known good one.

   Refer to REMOVAL [10/2022 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Operate the refreshing seat switch and check the driver seat climate control seat operates normally.

   Refer to ON-VEHICLE INSPECTION [10/2022 - ] 

   OK

   The climate control seat operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (REFRESHING SEAT SWITCH WAS DEFECTIVE) 

Result: 

NG 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2017 - ] 

1. Disconnect the Q32 seat cushion climate control blower assembly LH connector.
2. Disconnect the S13 seatback climate control blower LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q32-5 (CTB) - S13-1 (IG)	Always	Below 1 Ω
   Q32-5 (CTB) or S13-1 (IG) - Other terminals and body ground	Always	10 kΩ or higher
   Q32-6 (BBS) - S13-3 (BFB+)	Always	Below 1 Ω
   Q32-6 (BBS) or S13-3 (BFB+) - Other terminals and body ground	Always	10 kΩ or higher
   Q32-4 (BFB) - S13-4 (GND)	Always	Below 1 Ω
   Q32-4 (BFB) or S13-4 (GND) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Temporarily replace the seatback climate control blower (driver seat) with a new or known good one.

   Refer to DISASSEMBLY [10/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Check the climate control seat operation again.

   Refer to ON-VEHICLE INSPECTION [10/2022 - ] 

   OK

   The climate control seat operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (SEATBACK CLIMATE CONTROL BLOWER (DRIVER SEAT) WAS DEFECTIVE) 

Result: 

NG 

REPLACE SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY (DRIVER SEAT). Refer to  DISASSEMBLY [10/2023 - ] 

1. Disconnect the Q32 seat cushion climate control blower assembly LH connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q32-8 (GND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   Q32-1 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  10

1. Disconnect the G65 air conditioning amplifier assembly connector.
2. Disconnect the Q32 seat cushion climate control blower assembly LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G65-24 (LOUT) - Q32-7 (SIGN)	Always	Below 1 Ω
   G65-24 (LOUT) or Q32-7 (SIGN) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  11

1. Disconnect the G65 air conditioning amplifier assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   G65-24 (LOUT) - Body ground	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2017 - ] 

Result: 

NG 

REPLACE SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY (DRIVER SEAT). Refer to  DISASSEMBLY [10/2023 - ]