Air Conditioning System (For Hatchback) Recirculation Damper Servo Motor Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY (AIR INLET SERVO MOTOR)

INSPECT NO. 1 HEATER CONTROL SUB-ASSEMBLY (FRESH/RECIRC SWITCH, MODE SWITCH)

CHECK HARNESS AND CONNECTOR (BLOWER DAMPER SERVO SUB-ASSEMBLY - IG1 NO. 1 RELAY)

CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - IG1 NO. 1 RELAY)

CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - BODY GROUND)

CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - BLOWER DAMPER SERVO SUB-ASSEMBLY)

CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

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

1. Inspect the No. 1 blower damper servo sub-assembly (air inlet servo motor) (YARIS_NCP93 RM000003TQM00AX.html).
   

1. Inspect the No. 1 heater control sub-assembly (FRESH/RECIRC switch, MODE switch) (YARIS_NCP93 RM00000314R026X.html).
   

1. Disconnect the D126 No. 1 blower damper servo sub-assembly (air inlet servo motor) connector.
   

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   D126-5 (IG+) - Body ground	Ignition switch off	Below 1 V
   D126-5 (IG+) - Body ground	Ignition switch ON	11 to 14 V

   Text in Illustration

   *a	Front view of wire harness connector (to No. 1 Blower Damper Servo Sub-Assembly (Air Inlet Servo Motor))

1. Disconnect the D128 No. 1 heater control sub-assembly (FRESH/RECIRC switch, MODE switch) connector.
   

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   D128-2 (A/C+) - Body ground	Ignition switch off	Below 1 V
   D128-2 (A/C+) - Body ground	Ignition switch ON	11 to 14 V
   D128-8 (ACID) - Body ground*1	Ignition switch off	Below 1 V
   D128-8 (ACID) - Body ground*1	Ignition switch ON	11 to 14 V

   *1: w/ Cooler
   

   Text in Illustration

   *A	w/ Cooler
   *a	Front view of wire harness connector (to No. 1 Heater Control Sub-Assembly (FRESH/RECIRC Switch, MODE Switch))

1. Disconnect the D128 No. 1 heater control sub-assembly (FRESH/RECIRC switch, MODE switch) connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D128-4 (REC) - Body ground	Always	Below 1 Ω

   Text in Illustration

   *a	Front view of wire harness connector (to No. 1 Heater Control Sub-Assembly (FRESH/RECIRC Switch, MODE Switch))

1. Disconnect the D128 No. 1 heater control sub-assembly (FRESH/RECIRC switch, MODE switch) connector.
   

2. Disconnect the D126 No. 1 blower damper servo sub-assembly (air inlet servo motor) connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D128-3 (FRS) - D126-2 (FRS)	Always	Below 1 Ω
   D128-5 (LED+) - D126-1 (REC)	Always	Below 1 Ω
   D128-3 (FRS) - Body ground	Always	10 kΩ or higher
   D128-5 (LED+) - Body ground	Always	10 kΩ or higher

   Result

   Result	Proceed to
   NG	A
   OK (w/ cooler)	B
   OK (w/o cooler)	C

1. Disconnect the D128 No. 1 heater control sub-assembly (FRESH/RECIRC switch, MODE switch) connector.
   

2. Disconnect the D130 air conditioning amplifier assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D128-1 (F/D) - D130-2 (A/C)	Always	Below 1 Ω
   D128-1 (F/D) - Body ground	Always	10 kΩ or higher