Workshop Manual

1A–30
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Chart “A” Condenser Fan Does Not Run
Step Action Yes No
1 Are 30A fuse normal? Go to Step 2 Replace
2 Is relay (X-16) normal? Go to Step 3 Replace
3 Is pressure switch normal?
Go to Step 4
Switch defective
or insufficient
refrigerant.
4 Is fan motor normal? Go to Step 5 Replace
5 1. Disconnect condenser fan relay (X-16).
2. Check to see if battery voltage is present at the chassis side
relay terminal NO. X16-5.
Is there a battery voltage?
Go to Step 6
Repair open
circuit between
Condenser Fan
fuse (30A) and
No.X16-5.
6 1. Reconnect condenser fan relay (X-16).
2. Check to see if battery voltage is present at chassis side
connector terminal No.C21-3.
Is there a battery voltage?
Go to Step 7
Repair open
circuit between
fuse (10A) and
C21-3.
7 Check to see if continuity between chassis side relay terminal
No.X16-2 and the chassis side connector terminal No.C21-4.
Is there a continuity?
Go to Step 8
Repair open
circuit.
8 Check to see if continuity between chassis side connector
terminal No. C16-1 and chassis side relay terminal No.X16-1.
Is there a continuity?
Poor ground or
open circuit
between chassis
side connector
terminal
No.X16-4 (or
No.C16-2) and
body ground
(No.C10).
Repair open
circuit.
Chart “B” Condenser Fan Does Not Stop
Step Action Yes No
1 1. Disconnect the triple pressure connector.
Does condenser fan stop?
Replace the triple
pressure switch.
Replace the
condenser fan
relay.