Dtc P0340: Camshaft Position (Cmp) Sensor Circuit - Suzuki Grand Vitara 2011 Manual

1A-137 Engine General Information and Diagnosis: For Petrol Engine Model

DTC P0340: Camshaft Position (CMP) Sensor Circuit

Wiring Diagram
BLK/YEL
5
WHT/GRN
BLK/RED
6
9
7
15 14 13 12 11
30 28 27 26
29
45 44 43 42 41
59
60 58 57 56
1. CMP sensor
2. Signal rotor
System Description
The CMP sensor located on the transmission side of cylinder head (for M16 engine) or cylinder head cover (for J20
engine) consists of the signal generator (magnetic sensor) and signal rotor (intake camshaft portion).
The signal generator generates reference signal through slits in the slit plate which turns together with the camshaft.
Reference signal
The CMP sensor generates 6 pulses of signals each of which has a different waveform length while the camshaft
makes one full rotation. Refer to "Inspection of ECM and Its Circuits: For Petrol Engine Model".
Based on these signals, ECM judges which cylinder piston is in the compression stroke and the engine speed.
DTC Detecting Condition and Trouble Area
DTC detecting condition
• CMP sensor pulse is less than 20 pulses per crankshaft 8 revolutions
• CMP sensor pulse is more than 28 pulses per crankshaft 8 revolutions
• CMP sensor pulse is less than 20 pulses between BTDC 155° crank
angle (for M16 engine) or BTDC 75° crank angle (for J20 engine) and
BTDC 5° crank angle with crankshaft 8 revolutions from engine start.
(1 driving cycle detection logic)
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Crank engine for 5 sec.
4) Check DTC and pending DTC.
8
4
BLK/RED
BLK/RED
1
BLK/YEL
2
E23
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
3. ECM
4. Main relay
BLK/WHT
BLU
BLU/BLK BLU/BLK
BLU/BLK BLU/BLK
WHT/RED
2 1 15 14 13 12 11
17 16 30 28 27 26
29
32 31 45 44 43 42 41
59
47 46 60 58 57 56
5. Ignition switch 7. "FI" fuse
6. Fuse box No.2 8. "IG COIL" fuse
• CMP sensor circuit open or short
• Signal rotor teeth damaged
• CMP sensor malfunction, foreign
• ECM
3
E23-29
C37-15 BLK/ORN
C37-30 BLK/ORN
C37-29
BLK/YEL
C37-48
BLK/YEL
E23-60
BLK/YEL
C37-58
12V
5V
E23-1
5V
E23-16
C37-52
C37
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
9. "IGN" fuse
Trouble area
material being attached or improper
installation
S6JB0A1114043
2 1
17 16
32 31
47 46
I5JB0A110049-01