Suzuki Liana RH413, Service Manual

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Engine General Information and Diagnosis: 1A-42
MIL Flashes at Ignition Switch ON (Vehicle without Immobilizer Indicator Lamp)
S3RH0A1104013
Wiring Diagram
Circuit Description
When the ignition switch is turned ON, ECM causes the main relay to turn ON (close the contact point). Then, ECM
being supplied with the main power, turns ON the malfunction indicator lamp (MIL). When the engine starts to run and
no malfunction is detected in the system, MIL goes OFF but if a malfunction was or is detected, MIL remains ON even
when the engine is running.
Troubleshooting
1
G04-10
G04-23
12V 5V
ECM
2
3
G04-6
+B
G04-5
B
D
A
C
BLK/WHT
BRN/WHT
BLK/RED
BLK/RED
C41 (31P) G04 (24P) G03 (17P)
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 28 27 29 30 31
5 6 1 2 3 4 5 6 7
11 12 9 10 11 13 12 14 15 16
16 17
1 2
7 8
13 14
3 4
9 10
15
17 18
8
19 20 21 22 23 24
BLK
DN
TS GND MON
PPL/WHT C41-27
G04-15
PNK/GRN
G03-17
7
4
G03-7
PPL/YEL
5
6
9
IG1
PNK/BLK
BLK/RED
BLK/YEL
8
7
GRN
GRN
I3RH0A110012-01
1. “BATT” fuse 6. MIL
2. Main fuse box 7. To ignition switch
3. “IG” fuse 8. Main relay
4. To battery 9. “METER” fuse
5. Monitor connector (vehicle without immobilizer indicator lamp)
Step Action Yes No
1 MIL flashing pattern check
1) Turn ignition switch ON.
Does lamp flashing pattern indicate DTC?
Go to Step 2. Substitute a known-
good ECM and recheck.
2 Diag. switch circuit check
Is diag. switch terminal connected to ground via service
wire?
System is in good
condition. “PPL/WHT” circuit
shorted to ground. If
circuit is OK, substitute
a known-good ECM and
recheck.