Fan Control Knob (Fan Switch) And Air Conditioning (A/C) Switch; Heater And A/C (B-36), Thermostat (X-5) And Compressor (X-7) Relay - Isuzu Trooper 1999 Workshop Manual

Individual Inspection
Fan Control Knob (Fan Switch) And Air
Conditioning (A/C) Switch
1. Check for continuity between the fan switch and the
A/C switch side connector terminals.
Fan swtich Fan switch connector terminals with
position
OFF
1
2
3
4
A/C switch A/C switch connector terminals with
position
OFF
ON
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–47
865RS002
continuity
No continuity
1 – 2 – 4
1 – 4 – 5
1 – 3 – 4
1 – 4 – 6
continuity
1 – 6
1 – 2 – 6
Heater And A/C (B-36), Thermostat (X-5)
And Compressor (X-7) Relay
1. Disconnect relays and check for continuity and
resistance between relay terminals.
f For handling of these relays, refer to Heater &A/C
Relay in this section.
825RS003