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 OPERATION OF SPEEDOMETER
1. Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
  HINT:
  
  The vehicle speed sensor is operating normally if the speedometer display is normal.
NG: CHECK SPEEDOMETER CIRCUIT

OK: GO TO NEXT STEP

INSPECT ECM (SPD VOLTAGE)

Move the shift lever to the neutral position.
Jack up the vehicle.
Turn the ignition switch ON.

Check the voltage between the specified terminals of the E7 and E8 ECM connectors as the wheel is turned slowly.

Standard

ECM (SPD VOLTAGE)

Tester Connection	Specified Condition
E8-8 (SPD) - E7-1 (E1)	Generated intermittently

Fig 1: Inspecting ECM (SPD Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The output voltage should fluctuate up and down similarly to the diagram when the wheel is turned slowly.

Fig 2: Identifying ECM (SPD Voltage) Output Voltage

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - ECM)

OK: REPLACE ECM