DIAGNOSIS |
STEP 1. M.U.T.-III diagnosis code. |
(1)Erase the diagnosis code. |
(2)Recheck for diagnosis code. |
Q.
Is code No.55 set?
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STEP 2. Check the pressure switch (for low-pressure warning) circuit inside the HBB. |
(1)Depress the pedal repeatedly more than 40 times until the pedal depressing force feels heavy with the ignition switch at the "LOCK" (OFF) position to release the pressure of HBB power supply system. |
(2)Disconnect HBB connector B-107. |
(3)Measure the resistance between the terminals 1 and 5 at the HBB. OK: Approx. 5.7 kΩ |
(4)Turn ON the ignition switch to operate the pump motor, and then check that the pump motor stops. |
(5)Measure the resistance value (resistance value at high accumulator pressure) between the HBB-side terminal No. 1 and terminal No. 5. OK: Approx. 1 kΩ |
Q.
Is the check result normal?
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STEP 3. Check the leakage of brake fluid from the HBB visually. |
Q.
Is there leakage of brake fluid from the HBB?
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STEP 4. Disassemble and check the HBB. |
(1)Remove the HBB (Refer to ![]() |
(2)Disassemble the HBB (Refer to ![]() |
(3)Check the HBB for the following points.
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Q.
Are all of the checked items in good condition?
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STEP 5. Recheck for diagnosis code. |
(1)Erase the diagnosis code. |
(2)Recheck for diagnosis code. |
Q.
Is code No.57 set?
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STEP 6. Recheck for diagnosis code. |
(1)Erase the diagnosis code. |
(2)Recheck for diagnosis code. |
Q.
Is code No.57 set?
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