Isuzu Trooper 1999 Workshop Manual page 41

HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–13
2. Check for continuity between the heater and the A/C
relay (B-36) terminals.
825RS002
Relay terminals with
Condition
continuity
Normal 1 – 3 (Approx 85–105m)
When battery voltage is
2 – 4
applied between 1 – 3