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6-120 ENGINE GENERAL INFORMATION AND DIAGNOSIS
DTC P0340 Camshaft Position Sensor Circuit
WIRING DIAGRAM
5
WHT/BLU
BLK/YEL
60A 15A
80A
C64
7
6
5
4
17
16
15
14
13
12
27
26
25
24
23
22
34
33
32
1. CMP sensor
3. ECM
2. Signal rotor
4. Main relay
SYSTEM DESCRIPTION
The CMP sensor located on the transmission side of cylinder head 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 cam-
shaft.
Reference signal
The CMP sensor generates 6 pulses of signals each of which has a different waveform length while the cam-
shaft makes one full rotation. Refer to "Inspection of ECM and Its Circuits" in this section.
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
No CMP sensor signal for 3 seconds at engine cranking
while starting motor signal is inputting
BLK/YEL
4
BLK/YEL
BLK/YEL
2
C63
3
2
1
7
6
5
4
3
11
10
9
8
19
18
17
16
15
14
13
12
21
20
19
18
27
26
25
24
31
30
29
28
35
34
33
32
5. Ignition switch
6. Starting motor
BLK/WHT
BLK/YEL
6
BRN/WHT
BLK/RED
BLK/RED
BLK/RED
BLK/RED
1
RED/YEL
YEL/BLK
G91
2
1
6
5
4
3
11
10
9
8
16
15
14
13
12
11
10
23
22
21
20
27
26
25
24
23
22
21
31
30
29
28
35
34
33
32
31
• CMP sensor circuit open or short
• Signal rotor teeth damaged
• CMP sensor malfunction, foreign material being
attached or improper installation
• ECM
• Engine start signal circuit malfunction
3
G91-28
C63-1
C63-35
C64-2
C64-1
C64-15
12V
5V
G91-6
G91-5
5V
C63-10
2
1
9
8
7
20
19
18
17
30
29
28
TROUBLE AREA
BLK/ORN
BLK
BLK/ORN
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