Radiator Fan Control System Check - Suzuki Liana RH418 Supplementary Service Manual

1A-99 Engine General Information and Diagnosis:
Step
3 Check electric load signal circuit
1) Turn ignition switch ON.
2) Check voltage at each terminals "G04-17" and "G03-10"
of ECM connector connected, under above each
condition.
Voltage at "G04-17"
Clearance light, rear defogger and blower motor all
turned OFF: 0 V
Clearance light, rear defogger and blower motor to
2nd speed position or more all turned ON: 10 – 14 V
Voltage at "G03-10"
Clearance light, rear defogger and blower motor all
turned OFF: 10 – 14 V
Clearance light, rear defogger and blower motor to
2nd speed position or more all turned ON: 0 V
Is each voltage as specified?

Radiator Fan Control System Check

Wiring Diagram
BATT
80A
C41 (31P)
9 8 7 6 5 4
21 20 19 18 17 16 15
31 30 29 28 27
1. Radiator fan relay No.1
2. Radiator fan relay No.2
Action
30A
60A
7
BLK
ST
ACC
ON
6
IG
15A
BLK/WHT
BLU/WHT
G04 (24P)
3 2 1
7 6 5 4 3
14 13 12 11 10
16 15 14 13 12 11
26 25 24 23 22
24 23 22 21 20
3. Radiator fan relay No.3
4. Radiator fan
Electric load signal
circuit is in good
condition.
I2RH0B110086-01
1
5
BLU/RED
BLU/RED
+
H
BLU/BLK
2
BLU
BLK 3
G03 (17P)
2 1 6 5 4 3 2 1
12 11 10 9 8 7
10 9 8
19 18 17 17 16 15 14 13
5. Main fuse box
6. Circuit fuse box
Yes
"YEL/BLK" and/or "BLU/
BLK" circuit open or
short, electric load
diodes malfunction or
each electric load circuit
malfunction.
ECM
BRN G04-18
4
+
L
L-
BLK
H-
GRN/RED G04-3
C41-1
BLK/ORN
BLK
C41-3
7. Ignition switch
No
S3RH0B1104052
I3RH0A110023-01