Suzuki Liana RH418, Supplementary Service Manual

Page: 76 / 371

1A-63 Engine General Information and Diagnosis:
DTC P0340 (No. 15): Camshaft Position (CMP) Sensor Circuit Malfunction
S3RH0B1104031
Wiring Diagram
DTC Detecting Condition and Possible Cause
Reference
Connect oscilloscope between terminals “C41-11” of ECM connector connected to ECM and body ground and check
CMP sensor signal. When CKP circuit is failed (open or short), ECM identify the cylinder only by CMP sensor signal.
DTC Confirmation Procedure
1) Clear DTC.
2) Start engine and keep it at idle for 1 min.
3) Select “DTC” mode on scan tool and check DTC.
ECM
5V
+B
BLK/RED
BLU
BLK/ORN
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
C41-11
I2RH0B110051-01
DTC detecting condition Possible cause
No CMP sensor signal during engine running (CKP sensor
signal is inputted). • CMP sensor circuit open or short
• Signal rotor teeth damaged
• CMP sensor malfunction, foreign material being
attached or improper installation
• ECM malfunction
I2RH0B110052-01
1. No.1 cylinder 3. No.3 cylinder [A]: Oscilloscope Waveforms [C]: CMP sensor signal
2. No.2 cylinder 4. No.4 cylinder [B]: Waveforms at specified idle speed [D]: CMP sensor signal