Inspection Procedure
WARNING: This page is about a different car, the 2005 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- Check pressure switch (PL) resistance.
PREPARATION:
- Disconnect the connector (8P) from the hydraulic brake booster.
- With the ignition switch OFF, depress the brake pedal more than 40 times to decrease the accumulator pressure.
HINT:
When pressure in the power supply system is released, reaction force becomes light and stroke becomes longer.
CHECK:
Measure resistance between terminals PL and PLG of the hydraulic brake booster connector.
OK:
Resistance: 5.1 to 6.3 kΩ
HINT:
After inspection, connect the connector and clear the DTC (See PRE-CHECK ).
- NG: Replace hydraulic brake booster assembly.
- OK: Go to next step.
- Check pressure switch (PH) resistance.
PREPARATION:
- Disconnect the connector (5P) from the hydraulic brake booster.
- With the ignition switch OFF, depress the brake pedal more than 40 times to decrease the accumulator pressure.
HINT:
When pressure in the power supply system is released, reaction force becomes light and stroke becomes longer.
CHECK:
Measure resistance between terminals PH and PHG of the hydraulic brake booster connector.
OK:
Resistance: 0.9 to 1.1 kΩ
HINT:
After inspection, connect the connector and clear the DTC (See PRE-CHECK ).
- NG: Replace hydraulic brake booster assembly.
- OK: Go to next step.
- Check for open and short circuit in harness and connector between pressure switch and skid control ECU (See HOW TO USE THE DIAGNOSTIC TABLE AND INSPECTION
).
- NG: Repair or replace harness or connector.
- OK: Check and replace skid control ECU.