Isuzu 1999 RODEO Workshop Manual page 69

Magnetic Clutch Does Not Run (Cont'd)
Step
13 Check to see if battery voltage is present between chassis side
relay terminal No. X4-2 and No. X4-4.
Is there a battery voltage?
14 Check to see if battery voltage is present at chassis side relay
terminal No. X4-2.
Is there a battery voltage?
15 Check to see if battery voltage is present at chassis side
connector terminal No. C1-B14.
Is there a battery voltage?
16 Check to see if continuity between chassis side relay terminal No.
X5-1 and chassis side connector terminal No. C3-E15.
Is there a continuity?
17 Check to see if battery voltage is present at chassis side relay
terminal No.X5-2.
Is there a battery voltage?
18 1. Reconnect thermostat relay.
2. Check to see if battery voltage is present at chassis side
connector terminal No.B4-3.
Is there a battery voltage?
19 Check to see if battery voltage (appox 10V) is present at chassis
side connector terminal No. B4-1.
Is there a battery voltage?
20 Check to see if continuity between chassis side connector
terminal No. B4-2 and No.I23-6.
Is there a continuity?
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–41
Action Yes
Go to Step 14 Go to Step 15
Open circuit
between No.
EB-5 (10A) fuse
Go to Step 16
and No. X4-2.
Power train
control module
(PCM) defective.
Open circuit
Refer to
Driveability and between No.
Emissions in X4-4 and No.
Engine section.
Power train
control module
(PCM) defective.
Refer to
Driveability and
Emissions in
Open circuit
Engine section.
Open circuit
between No.X5-2
and C11-2.
Go to Step 18
Open circuit
between No.I24-1
Go to Step 19 and No.B4-3.
Open circuit
between No.
X5-4 and No.
Go to Step 20
Open circuit
between No.
B4-2 and
No.I23-6 or poor
Electronic
ground (Fan
thermostat
Switch Ground
defective.
No
C1-B14.
B4-1.
Circuit).