Isuzu KB P190. Service manual - part 28

1-78  HEATER AND AIR CONDITIONING 

  

 

RTW410MF000201 

 

HEATER AND AIR CONDITIONING  1-79 

CONTROL PANEL ILLUMINATION BULB 

 

  REMOVAL AND INSTALLATION 

 

 
 
 

 

 
 

This illustration is based on RHD model 

 

RTW710MF000401 

 

Removal Steps  

  1. Control lever assembly 

  2. Illumination bulb 

 

 

Installation Steps 

 

2. Illumination bulb 

 

1. Control lever assembly 

 

1-80  HEATER AND AIR CONDITIONING 

 

 

 

RTW710MH000101 

 

Important Operations - Removal 

1.  Control lever assembly 
Refer to “CONTROL LEVER ASSEMBLY” in this section. 
 
2. Illumination Bulb 
To remove the illumination bulb, insert a pliers (long nose) into 
the cap at the back of the bulb. Turn the bulb counterclockwise 
and pull it free. 
 

 

HEATER AND AIR CONDITIONING  1-81 

 INSPECTION AND REPAIR 

 

   

840R300005-X 

 
 

Resistor 

As for air-conditioning model, fixed on left (RHD) / right (LHD) 

side of the evaporator unit. 

As for heater only model, fixed on left (RHD) / right (LHD) side 

of the duct placed between blower unit and heater unit. 

Replace the resistor with a new on if the coil is found to be 

open or if the resistance value deviates from the specified 

range. 
 

 

 
 

 

Terminal Resistance 

3 – 2 

2.04 

Ω 

3 – 4 

0.88 

Ω 

3 – 1  

0.31 

Ω 

 

 

 
 

Blower motor  

Check blower motor for smooth rotation. 
Connect the battery positive terminal to the No.1 terminal of the

blower motor and negative to the No.2. 

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