Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS
VEHICLE STABILITY CONTROL SYSTEM - CHECK FOR INTERMITTENT PROBLEMS
DESCRIPTION |
- HINT:
- A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected through the ECU data monitor function of the GTS.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / ABS/VSC/TRC / Data List.
Select areas where momentary interruptions should be monitored.
- HINT:
A momentary interruption (open circuit) cannot be detected for 3 seconds after the ignition switch is turned to ON (initial check).
If Error is displayed, check for continuity between the ECUs and the sensors or between ECUs.
Error remains displayed on the GTS for 1 second after the harness signal changes from a momentary interruption (open circuit) to normal.
Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
FR Speed Open | Front speed sensor RH open circuit detection/ Error or Normal | Normal | - |
FL Speed Open | Front speed sensor LH open circuit detection/ Error or Normal | Normal | - |
RR Speed Open | Rear speed sensor RH open circuit detection/ Error or Normal | Normal | - |
RL Speed Open | Rear speed sensor LH open circuit detection/ Error or Normal | Normal | - |
EFI Communication Open | ECM communication open circuit detection/ Error or Normal | Normal | - |
Yaw Rate Open | Yaw rate sensor open circuit detection/ Error or Normal | Normal | - |
Deceleration Open | Acceleration sensor open circuit detection/ Error or Normal | Normal | - |
Steering Open | Steering sensor open circuit detection/ Error or Normal | Normal | - |
Master Cylinder Open | Master cylinder pressure sensor open circuit detection/ Error or Normal | Normal | - |
IG Voltage Value Decreased | IG voltage value decreased detection/ Error or Normal | Normal | - |
IG Voltage Value Increased | IG voltage value increased detection/ Error or Normal | Normal | - |
FR Speed Sensor Voltage Open | Front speed sensor RH voltage open circuit detection/ Error or Normal | Normal | - |
FL Speed Sensor Voltage Open | Front speed sensor LH voltage open circuit detection/ Error or Normal | Normal | - |
RR Speed Sensor Voltage Open | Rear speed sensor RH voltage open circuit detection/ Error or Normal | Normal | - |
RL Speed Sensor Voltage Open | Rear speed sensor LH voltage open circuit detection/ Error or Normal | Normal | - |
M/C Pressure Sensor Noise | Master cylinder pressure sensor noise detection/ Error or Normal | Normal | - |
Yaw Rate Sensor Voltage Open | Yaw rate sensor voltage open circuit detection/ Error or Normal | Normal | - |
EFI Communication Invalid | ECM communication invalid detection/ Error or Normal | Normal | - |
While observing the screen, gently jiggle the connectors or wire harnesses between the ECUs and sensors or between ECUs.
- OK:
- Normal display appears.
- NOTICE:
- The connector and/or wire harness has a momentary interruption (open circuit) if the display changes. Repair or replace the connectors and/or wire harnesses as one of them is faulty.