Isuzu 1999 RODEO Workshop Manual page 72

1A–44 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
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.
Heater (X-6), Thermostat (X-5), Condenser
Fan (X-9) And Compressor (X-4) Relay
1. Disconnect relays and check for continuity and
resistance between relay terminals.
f For handling of these relays, refer to Heater Relay
in this section.
Pressure Switch
1. Disconnect pressure switch connector and check for
continuity between pressure switch side connector
terminals (1) and (2).
Triple Pressure Switch (V6, A/T)
D08RW061
1. Disconnect the connector and check for continuity
between pressure switch side connector terminals (1)
and (2).
2. Reconnect the connector to activate the A/C switch,
and check to see if there is continuity between the
chassis side connector terminals (3) and (4) and the
fan operates.
825RS179
875RW003
875RW013