Suzuki Liana RH413, Service Manual

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Engine General Information and Diagnosis: 1A-76
DTC P0325 (No. 17): Knock Sensor Circuit Malfunction
S3RH0A1104037
Wiring Diagram
DTC Detecting Condition and Possible Cause
DTC Confirmation Procedure
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select “DTC” mode on scan tool and check DTC.
10 Check parts or system which can cause engine rough
idle or poor performance
1) Check engine mechanical parts or system which can
cause engine rough idle or poor performance.
• Engine compression (Refer to “Compression Check in
Section 1D”.)
• Valve lash (Refer to “Camshaft, Tappet and shim
Inspection in Section 1D”.)
• Valve timing (Refer to “Timing Chain and Chain
Tensioner Removal and Installation in Section 1D”.)
Are they in good condition?
Check wire harness and
connection of ECM
ground, ignition system
and fuel injector for
intermittent open and
short. Repair or replace.
Step Action Yes No
ECM
C41-25
5V
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
I3RH0A110019-01
DTC detecting condition Possible cause
• Knock sensor voltage is 3.91 V or more.
or
• Knock sensor voltage is 1.23 V or less. • “RED” circuit open or shorted to ground
• Knock sensor malfunction
• ECM malfunction