Scribd
Upload
577 views2 pages

DTC P0340 Camshaft Position Sensor Circuit Malfunc-Tion

The document provides diagnostic information for a camshaft position sensor circuit malfunction error code P0340 in a Toyota Tacoma engine. It describes the camshaft position sensor circuit, lists the possible causes of the error code, provides a wiring diagram reference, and an inspection procedure to diagnose the issue.

Uploaded by

Henrry Omar Peña Contreras
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
577 views2 pages

DTC P0340 Camshaft Position Sensor Circuit Malfunc-Tion

The document provides diagnostic information for a camshaft position sensor circuit malfunction error code P0340 in a Toyota Tacoma engine. It describes the camshaft position sensor circuit, lists the possible causes of the error code, provides a wiring diagram reference, and an inspection procedure to diagnose the issue.

Uploaded by

Henrry Omar Peña Contreras
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

DI−66

DIAGNOSTICS − ENGINE (2RZ−FE, 3RZ−FE)


DI6WU−02

DTC P0340 Camshaft Position Sensor Circuit Malfunc-


tion

CIRCUIT DESCRIPTION
Camshaft position sensor (G signal) consists of a magnet, iron core and pickup coil. The G signal plate has
1 tooth on its outer circumference and is mounted on intake camshaft.
When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil change,
causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.
The NE signal plate has 34 teeth and is mounted on the crankshaft. The NE signal sensor generates 34
signals at every engine revolution. The ECM detects the standard crankshaft angle based on the G signal
and the actual crankshaft angle and the engine speed by the NE signal.
DTC No. DTC Detection Condition Trouble Area
No camshaft position sensor signal to ECM during cranking
(2 trip detection logic) S Open or short in camshaft position sensor circuit
P0340 S Camshaft position sensor
No camshaft position sensor signal to ECM during engine run-
S ECM
ning

WIRING DIAGRAM
Refer to DTC P0335 on page DI−64.

INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand−held tester or OBD II scan tool, as freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining
whether the vehicle was running or stopped, the engine was warmed up or not, the air−fuel ratio was lean
or rich, etc. at the time of the malfunction.

1 Check resistance of camshaft position sensor (See page IG−1).

Reference: INSPECTION USING OSCILLOSCOPE


Refer to DTC P0335 on page DI−64.

NG Replace camshaft position sensor.

OK

2 Check for open and short in harness and connector between ECM and camshaft
position sensor (See page IN−28).

NG Repair or replace harness or connector.

OK

2001 TOYOTA TACOMA (RM835U)

Author: Date: 326


DI−67
DIAGNOSTICS − ENGINE (2RZ−FE, 3RZ−FE)

3 Inspect sensor installation.

NG Tighten sensor.

OK

Check and replace ECM (See page IN−28).

2001 TOYOTA TACOMA (RM835U)

Author: Date: 327

You might also like