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- Refer to Data List Reference Table
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- Item 171: Brake booster pressure sensor
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal ACP5&BVS5 line and earth.
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Q.
Is the check result normal?
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- Measure engine-ECU terminal voltage.
- Disconnect brake booster pressure sensor connector.
- Ignition switch: ON
- Voltage between terminal ACP5&BVS5 and earth.
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Q.
Is the check result normal?
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Repair or replace the connector(s), or check and repair the harness of open circuit in ACP5&BVS5 line between brake booster pressure sensor connector and engine-ECU connector.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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- Refer to Data List Reference Table
.
- Item 171: Brake booster pressure sensor
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
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- Use special tool test harness (MB991348) to connect connector, and measure at pick-up harness.
- Ignition switch: ON
- Voltage between terminal ACP5&BVS5 line and earth.
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Q.
Is the check result normal?
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Repair or replace the connector(s), or check and repair the harness of damage in ACP5&BVS5 line between brake booster pressure sensor connector and engine-ECU connector.
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- Use special tool test harness (MB991348) to connect connector, and measure at pick-up harness.
- Start up the engine and let it idle for several minutes.
- Stop the engine, and turn the ignition switch to the ON position.
- Depress the brake pedal several times.
- Voltage between terminal BVS line and earth.
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OK: The more frequently the brake pedal is depressed, the more the voltage is decreased.
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Replace the brake booster pressure sensor.
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Repair the connector(s) or wiring harness.
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- Measure engine-ECU terminal voltage.
- Start up the engine and let it idle for several minutes.
- Stop the engine, and turn the ignition switch to the ON position.
- Depress the brake pedal several times.
- Voltage between terminal code BVS and earth.
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OK: The more frequently the brake pedal is depressed, the more the voltage is decreased.
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Q.
Is the check result normal?
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Repair or replace the connector(s), or check and repair the harness of open circuit, and damage in BVS line between brake booster pressure sensor connector and engine-ECU connector.
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