Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE)

Disconnect the C31 camshaft position sensor connector.
Turn the ignition switch ON.

Measure the voltage between terminal 3 of the camshaft position sensor connector and body ground.

Standard voltage

SENSOR POWER SOURCE

Tester Connection	Specified Condition
C31-3 - Body ground	4.5 to 5.0 V

Fig 1: Checking Harness & Connector (Sensor Power Source)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the camshaft position sensor connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO NEXT STEP

CHECK ECM TERMINAL VOLTAGE

Inspect the ECM using an oscilloscope.

Fig 2: Checking ECM Terminal Voltage

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

While the engine is idling, check the waveform between the terminals of the ECM connector.

Fig 3: Checking Waveform Between Terminals Of ECM Connector

Standard voltage

ECM TERMINAL VOLTAGE

Tester Connection	Specified Condition
E7-19 (G2+) - E7-29 (G2-)	Correct waveform is as shown

HINT:

*1: Crank angle
*2: 180°
*3: 120°
*4: 60°

OK: REPLACE ECM

NG: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (ECM - CAMSHAFT POSITION SENSOR)
1. Check harness and connector (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO NEXT STEP
INSPECT SENSOR INSTALLATION
1. Check the camshaft position sensor installation.
  
  Fig 4: Inspecting Sensor Installation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: The camshaft position sensor is installed properly.
NG: REPAIR OR REPLACE SENSOR

OK: GO TO NEXT STEP
INSPECT CAMSHAFT TIMING PULLEY LH (SIGNAL PLATE TOOTH)
NG: REPLACE CAMSHAFT TIMING PULLEY LH

OK: REPLACE CAMSHAFT POSITION SENSOR