Description

DATA TROUBLE CODE: 13

SYSTEM: G, NE Signal Circuit (No.2)

CIRCUIT DESCRIPTION



Camshaft position sensors (G1 and G2 signals) are mounted on the intake side of the cylinder head and the crankshaft position sensor (NE signal) is mounted on the oil pump body. These sensors consist of a timing rotor and pick-up coil.



The G1 and the G2 timing rotors each have a single tooth on their outer circumference and are mounted on the intake camshaft.
When the intake camshaft rotates, it causes the protrusion on the timing rotors to pass through the magnetic field created by the pick-up coil, which causes a fluctuation in the field, generates an electromotive force in the pick-up coil.



The NE timing rotor has 12 teeth and is mounted on the crankshaft. The NE signal sensor (crankshaft position sensor signal) generates 12 NE signals per engine revolution.



The ECM detects the camshaft angle based on the G1 and G2 signals, and the actual crankshaft angle and the engine rpm by the NE signals.

DIAGNOSTIC TROUBLE CODE DETECTING CONDITION
- No NE signal to ECM for 0.1 seconds or more at 1,000 rpm or more.
or
- NE signal does not pulse 12 times to ECM during the interval between G1 and G2 pulses.
or
- Deviation in G1, G2 signal and NE signal signal continues for 3 seconds during idling (throttle fully closed) after engine warmed up.

TROUBLE AREA
- Open or short in crankshaft position sensor circuit.
- Crankshaft position sensor.
- ECM
or
- Open or short in crankshaft position sensor circuit.
- Mechanical system malfunction (skipping teeth of timing belt, belt stretched)
- Crankshaft position sensor.
- ECM.
or
- Mechanical system malfunction (skipping teeth of timing belt, belt stretched)
- Camshaft position sensor No.1, No.2.
- ECM.