Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the master cylinder solenoid, perform zero point CALIBRATION .

HINT:

Remove the hydraulic brake booster before the inspection (see REMOVAL ).

Check connection of the brake pump motor wire harness (MT+/MT-).
PREPARATION:

Using a screwdriver, remove the 2 plugs from the hydraulic brake booster assembly (see DISASSEMBLY ).

CHECK:

Check the tightening torque of the 2 screws which tighten the wire harness connecting the hydraulic brake booster assembly and the brake booster pump (see DISASSEMBLY ).

OK : GO TO NEXT STEP

Torque: 2.9 N.m (30 kgf.cm, 26 in.lbf)
1. NG : Tighten the screws up, then go to step 3 .
2. OK : Go to next step.
Check resistance of the pump motor (MT+/MT-) wire harness.
PREPARATION:

Using a screwdriver, remove the 2 screws and pull the wire harness from the hydraulic brake booster assembly (see DISASSEMBLY ).

CHECK:

Measure the resistance between the red wire (MT+) and the black wire (MT-).

OK:

Resistance: 2 Ω

Fig 1: Identifying Pump Motor (MT+/MT-) Wire Harness
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG : Replace pump motor assembly w/ accumulator (See DISASSEMBLY ).
2. OK : Go to next step.
Reconfirm DTC (See DTC CHECK / CLEAR ).
PREPARATION:
1. Reassemble the hydraulic brake booster assembly.
2. Install the hydraulic brake booster assembly (see REASSEMBLY ).
3. Clear the DTCs.
CHECK:

Check if the same DTCs are detected.

RESULT:
DTC OUTPUT RESULT

DTC is output A

DTC is not output B
1. B : END.
2. A : Replace master cylinder solenoid (See DISASSEMBLY ).

DTC is output	A
DTC is not output	B