Air Conditioning System (For Manual Air Conditioning System) Blower Motor Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (HTR)

INSPECT HEATER RELAY (Marking: HTR)

INSPECT BLOWER MOTOR

CHECK WIRE HARNESS (HEATER CONTROL (BLOWER SWITCH) - BATTERY)

INSPECT HEATER CONTROL (BLOWER SWITCH)

INSPECT BLOWER RESISTOR

CHECK WIRE HARNESS (HEATER CONTROL (BLOWER SWITCH) - BLOWER RESISTOR)

CHECK WIRE HARNESS (BLOWER RESISTOR - BLOWER MOTOR)

CHECK WIRE HARNESS (BLOWER MOTOR - BODY GROUND)

CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BATTERY)

CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BODY GROUND)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Remove the HTR fuse from the engine room No. 2 relay block.
   

2. Measure the resistance of the fuse.
   

   Standard resistance:

   Below 1 Ω
   

1. Remove the heater relay from the instrument panel junction block.
   

2. Measure the resistance of the relay.
   

   Standard resistance:

   Tester Connection	Specified Condition
   3 - 4	Below 1 Ω
   3 - 5	10 kΩ or higher
   3 - 4	10 kΩ or higher (when battery voltage is applied to terminals 1 and 2)
   3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

1. Disconnect the E61 motor connector.
   

2. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, then check that the blower motor operates smoothly.
   

   OK:

   The blower motor operates smoothly.
   

3. Measure the current.
   

   Standard current:

   Tester Connection	Condition	Specified Condition
   E61-1 - E61-2	Blower motor operates	1 to 3 A

1. Disconnect the E27 heater control connector.
   

2. Measure the voltage of the wire harness side connector.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E27-4 (LO) - Body ground	Ignition switch on (IG)	10 to 14 V

1. Remove the heater control.
   

2. Measure the resistance of the switch.
   

   Standard resistance:

   Tester Connection	Switch Position	Specified Condition
   ALL - 5 (E)	0	10 kΩ or higher
   4 (LO) - 5 (E)	1	Below 1 Ω
   4 (LO) - 5 (E) - 9 (M1)	1 to 2	Below 1 Ω
   4 (LO) - 5 (E) - 9 (M1)	2	Below 1 Ω
   4 (LO) - 5 (E) - 9 (M1) - 10 (M2)	2 to 3	Below 1 Ω
   4 (LO) - 5 (E) - 10 (M2)	3	Below 1 Ω
   4 (LO) - 5 (E) - 10 (M2) - 6(HI)	3 to 4	Below 1 Ω
   4 (LO) - 5 (E) - 6 (HI)	4	Below 1 Ω

1. Remove the blower resistor.
   

2. Measure the resistance of the resistor.
   
   

   Standard resistance:

   for LHD
   

   Tester Connection	Specified Condition
   E62-4 (E) - E62-1 (HI)	3.12 to 3.60 Ω
   E62-4 (E) - E62-3 (M2)	1.45 to 1.67 Ω
   E62-4 (E) - E62-2 (M1)	0.52 to 0.60 Ω

   for RHD
   

   Tester Connection	Specified Condition
   E62-1 (E) - E62-4 (HI)	3.12 to 3.60 Ω
   E62-1 (E) - E62-2 (M2)	1.45 to 1.67 Ω
   E62-1 (E) - E62-3 (M1)	0.52 to 0.60 Ω

1. Disconnect the E27 heater control connector.
   

2. Disconnect the E62 blower resistor connector.
   

3. Measure the resistance of the wire harness side connectors.
   
   

   Standard resistance:

   for LHD
   

   Tester Connection	Specified Condition
   E27-6 (HI) - E62-1 (HI)	Below 1 Ω
   E27-9 (M1) - E62-2 (M1)	Below 1 Ω
   E27-10 (M2) - E62-3 (M2)	Below 1 Ω
   E27-5 (E) - Body ground	Below 1 Ω
   E62-4 (E) - Body ground	Below 1 Ω

   for RHD
   

   Tester Connection	Specified Condition
   E27-6 (HI) - E62-4 (HI)	Below 1 Ω
   E27-9 (M1) - E62-3 (M1)	Below 1 Ω
   E27-10 (M2) - E62-2 (M2)	Below 1 Ω
   E27-5 (E) - Body ground	Below 1 Ω
   E62-1 (E) - Body ground	Below 1 Ω

1. Disconnect the E62 blower resistor connector.
   

2. Disconnect the E61 motor connector.
   

3. Measure the resistance of the wire harness side connectors.
   
   

   Standard resistance:

   for LHD
   

   Tester Connection	Specified Condition
   E62-4 (E) - E61-1	Below 1 Ω

   for RHD
   

   Tester Connection	Specified Condition
   E62-1 (E) - E61-1	Below 1 Ω

1. Disconnect the E61 motor connector.
   

2. Measure the resistance of the wire harness side connector.
   

   Standard resistance:

   Tester Connection	Specified Condition
   E61-2 - Body ground	Below 1 Ω

3. Measure the voltage of the wire harness side connector.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E61-2 - Body ground	Ignition switch on (IG) Heater control (blower switch) 1	10 to 14 V

1. Disconnect the E42 amplifier connector.
   

2. Measure the voltage of the wire harness side connector.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E42-21 (SBLW) - Body ground	Ignition switch on (IG) Heater control (blower switch): 0	10 to 14 V

1. Disconnect the E42 amplifier connector.
   

2. Measure the resistance of the wire harness side connector.
   

   Standard resistance:

   Tester Connection	Specified Condition
   E42-24 (GND) - Body ground	Below 1 Ω