Dtc P0340 (No. 15): Camshaft Position (Cmp) Sensor Circuit Malfunction - Suzuki Liana RH418 Supplementary Service Manual

1A-63 Engine General Information and Diagnosis:

DTC P0340 (No. 15): Camshaft Position (CMP) Sensor Circuit Malfunction

Wiring Diagram
21
31
DTC Detecting Condition and Possible Cause
DTC detecting condition
No CMP sensor signal during engine running (CKP sensor
signal is inputted).
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.
1. No.1 cylinder
2. No.2 cylinder
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.
BLK/RED
BLK/ORN
C41 (31P)
9 8 7 6 5 4 3 2 1
20 19 18 17 16 15 14 13 12 11 10
30 29 28 27 26 25 24 23 22
3. No.3 cylinder
4. No.4 cylinder
+B
BLU C41-11
G04 (24P)
7 6 5 4 3 2 1 6 5
16 15 14 13 12 11 10 9 8 12 11
24 23 22 21 20 19 18 17
17 16
• CMP sensor circuit open or short
• Signal rotor teeth damaged
• CMP sensor malfunction, foreign material being
attached or improper installation
• ECM malfunction
[A]: Oscilloscope Waveforms
[B]: Waveforms at specified idle speed
5V
ECM
G03 (17P)
4 3 2 1
10 9 8 7
15 14 13
Possible cause
[C]: CMP sensor signal
[D]: CMP sensor signal
S3RH0B1104031
I2RH0B110051-01
I2RH0B110052-01