Suzuki Ignis Service Manual page 3341

6-140 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Step
6 Radiator Fan Control Signal Check
1) Turn ignition switch to OFF position.
2) Install radiator fan relay to relay/fuse box.
3) Disconnect connectors from ECM.
4) Measure voltage between "G91-4" wire ter-
minal of ECM connector and vehicle body
ground with ignition switch turned ON.
Is voltage 10 – 14 V?
7 Check Relay Circuit
1) Turn ignition switch to OFF position.
2) Disconnect connectors from ECM.
3) Remove radiator fan relay from relay/fuse
box.
4) Check for proper connection to "G91-4" wire
terminal of ECM connector and "BRN" wire
terminal of radiator fan relay connector.
5) If OK, measure resistance between "G91-4"
wire terminal of ECM connector and "BRN"
wire terminal of radiator fan relay connector.
Is resistance 1 Ω or less?
8 Check Relay Circuit
1) Measure resistance between "G91-4" wire
terminal of ECM connector and vehicle
body ground.
Is it infinite?
9 Check Radiator Fan Relay
1) Check radiator fan relay referring to "Main
relay, fuel pump relay and radiator fan relay
inspection" in Section 6E1.
Is it in good condition?
[A]
1
Action
[A]: Fig. 1 for Step 2
1. Radiator fan relay
Yes
Substitute a known-good
ECM and recheck.
Go to Step 8.
Go to Step 9.
System is in good condi-
tion.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0A.
No
Go to Step 7.
"BRN" wire in open or
high resistance circuit.
"BRN" wire shorted to
ground circuit.
Replace radiator fan
relay.