Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1072

1A–10 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Chart “E” Blower Motor Does Not Run At High Position 

Step

Action

Yes

No

1

Is resistor OK?

Go to Step 2

Replace

2

Is fan control lever (Fan Switch) OK?

Open circuit

between Chassis

side connector

terminal No.

C41-3 and No.

I23-5.

Replace control

lever assembly.

Chart “F” Blower Motor Does Not Stop In The “OFF” Position 

Step

Action

Yes

No

1

Is the fan control lever (Fan Switch) OK?

Short circuit

between chassis

side connector

terminal

No. C38-2 and

No. C41-2,No. C4

1-3 and

No. I23-5,

No. C41-6 and

No. I23-4,

No. C41-4 and

No. I23-3 or

No. C41-1 and

No. I23-2

Replace control

lever assembly.

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–11

Individual Inspection

Blower Motor

1. Disconnect the blower motor (C-38) connector from

the blower motor.

2. Connect the battery positive terminal to the No. 1

terminal of the blower motor and the negative to the
No. 2.

3. Be sure to check to see if the blower motor operates

correctly.

873RS005

Resistor

1. Disconnect the resistor (C-41) connector.
2. Check for continuity and resistance between the

terminals of the resistor.

840RS001

Fan Control Lever (Fan Switch)

1. Check for continuity between the terminals of the fan

switch.

D08RW058

Heater Relay

1. Disconnect the heater relay (X-1).

D

When removing the connector for relay, unfasten
the tank lock of the connector by using a
screwdriver, then pull the relay (1) out.

825RS001

1A–12 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

2. Check for continuity between the heater relay (X-1)

terminals.

825RS179

HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–13

Heater Unit

Heater Unit and Associated Parts

840R100001

Legend

(1) Instrument Panel Assembly
(2) Cross Beam Assembly
(3) Instrument Panel Bracket
(4) Ventilation Lower Duct
(5) Rear Heater Duct
(6) Evaporator Assembly (A/C only)

(7) Edge Protector Knee Bolster
(8) Knee Bolster Bracket
(9) Duct

(10) Heater Unit Assembly

(11) Heater Hose

(12) Resistor Connector

Removal

1. Disconnect the battery ground cable.
2. Drain the engine coolant.
3. Discharge and recover refrigerant (with air

conditioning).

D

Refer to Refrigerant Recovery in this section.

4. Remove the Instrument panel assembly.

D

Refer to Instrument Panel Assembly in Body and
Accessories section.

5. Remove instrument panel bracket.

D

Refer to Cross Beam Assembly in Body and
Accessories section.

6. Cross Beam Assembly.

D

Refer to Cross Beam Assembly in Body and
Accessories section.

7. Disconnect resistor connector.
8. Remove knee bolster bracket.
9. Remove duct.

10. Remove evaporator assembly (A/C only).

D

Refer to Evaporator Assembly in this section.

11. Remove ventilation lower duct.

12. Remove rear heater duct.

D

Remove foot rest, carpet and 3 clips.

13. Remove heater unit assembly.

D

Disconnect heater hoses at heater unit.