6-2-116 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
DTC P0340 Camshaft Position Sensor Circuit
Wiring Diagram
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
1. CMP sensor 3. ECM 5. Ignition switch
2. Signal rotor 4. Main relay 6. Starting motor
E23 E22 E21
12345671234561234567
7
891011121314151617 8910111213141516 891011121314151617
1819
1819
1718192021222324252627 20212223 202122232425 24252627 2627
2829303132 32 282930 28293031 3133 33 323334 3435 3435
E23-15
E21-28
12V
5V
5V
E21-6
E21-5
BLK/WHT
BLK/RED
BLK/RED
BLK/RED
WHT/BLU
80A
60A 20A
BLK/YEL BLK/YEL
BLK/YEL
BLU/BLK
E22-1
E23-2
BLK
BLK/YEL
BLK/YEL
E23-1
ORN
E22-10
BLK/RED
BLK
E22-35
BLK/YEL
5
4
1
3
6
BLU/BLK
2
DTC Detecting Condition Trouble Area
No CMP sensor signal for 2.4 seconds at engine crank-
ing while starting motor signal is inputting
• 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
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