Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di eg5vzfe cip0340

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DI-68
                                                DIAGNOSTICS       -   ENGINE (5VZ-FE)
                                                                                                                                  DI0S6-08




    DTC                P0340              Camshaft Position Sensor Circuit Malfunc-
                                          tion

CIRCUIT DESCRIPTION
Camshaft posision 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 the left bank camshafts.
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 Detecting 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                                                                    SCCamshaft position sensor
                                                                                   h ft    iti
              No camshaft position sensor signal to ECM with engine speed
                                                                            S ECM
              600 rpm or more


WIRING DIAGRAM
Refer to DTC P0335 on page DI-66 .

INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand-held tester or OBDII scan tool. Because freeze frame records
the engine conditions when the 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-66 .

                                                          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.




2002 4RUNNER (RM887U)

                                                                               Author :                     Date :                  244
                                                                                         DI-69
                                 DIAGNOSTICS   -   ENGINE (5VZ-FE)



  OK



  3     Inspect sensor installation and tooth of RH camshaft timing pulley.


                                        NG         Tighten sensor. Replace RH camshaft timing
                                                   pulley


  OK



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




2002 4RUNNER (RM887U)

                                                         Author :        Date :          245

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