Isuzu 1999 RODEO Workshop Manual page 71

Chart "A" Condenser Fan Does Not Run
Step
1 Are 30A fuse OK?
2 Is relay (X-9) OK?
3 Is pressure switch OK?
4 Is air conditioning switch OK?
5 Is fan motor OK?
6 1. Disconnect condenser fan relay (X-9).
2. Check to see if battery voltage is present at the chassis side
relay terminal NO. X9-5
Is there a battery voltage?
7 1. Reconnect condenser fan relay (X-9).
2. Air conditioning switch "ON".
3. Check to see if battery voltage is present at chassis side
connector terminal No.C11-3.
Is there a battery voltage?
8 1. Air conditioning switch "OFF".
2. Check to see if continuity between chassis side relay terminal
No.X9-2 and the chassis side connector terminal No.C11-4.
Is there a continuity?
9 Check to see if continuity between chassis side connector
terminal No. C24-1 and chassis side relay terminal No.X9-1.
Is there a continuity?
Chart "B" Condenser Fan Does Not Stop
Step
1 1. Air conditioning switch "OFF".
Does condenser fan stop?
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–43
Action
Action
Yes
Go to Step 2
Go to Step 3
Switch defective
or insufficient
Go to Step 4 refrigerant.
Go to Step 5
Go to Step 6
Open circuit
between EB-17
fuse (30A) and
Go to Step 7 No.X9-5.
Open circuit
between I-24-1
Go to Step 8 and C11-3.
Go to Step 9 Open circuit.
Poor ground or
open circuit
between chassis
side connector
terminal No.X9-4
(or No.C24-2)
and body ground
(No.C36).
Open circuit.
Yes
Condenser fan
relay (X9)
Triple pressure
defective.
switch defective.
No
Replace
Replace
Replace
Replace
No