Part 1
Checking the vacuum system
Terminal
Connecting the Volvo Scan Tool (ST)
Is the Volvo Scan Tool (ST) connected to both the VIDA cart and the car and switched on?
Yes - FAULT FOUND
No - No Fault Found
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FAULT FOUND - Checking the ground lead. Checking the power supply
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Checking the ground lead. Checking the power supply
- Ignition on.
- Power up the Volvo Scan Tool (ST).
- Try to establish communication with the cruise control control module.
Is communication with the cruise control control module established?
Yes - Checking the function of the governor
No - No Fault Found
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Checking the function of the governor
- Ignition off.
- Disconnect the control module.
- Ignition on.
Connect the single wire cable between terminals #1 and #11 on the control module connector.
Connect the other cable with the double flat pins to control module connector terminal #10. Connect one cable to control module connector terminal 12.
The governor should click.
Did the governor click?
Yes - Checking the function of the vacuum pump
No - Checking the cable for the governor
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Checking the cable for the governor
- Ignition off.
- Control module disconnected.
- Disconnect the vacuum pump.
Connect a voltmeter between vacuum pump connector terminal #1 and ground.
The ohmmeter should read infinite resistance.
OK - Checking the power supply for the governor
Not OK - Checking for a short-circuit
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Checking for a short-circuit
- Ignition off.
- Check the cable between vacuum pump connector terminal #1 and control module connector terminal #12 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification of the governor
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Checking the power supply for the governor
- Ignition off.
- Control module connected.
- Vacuum pump removed.
- Ignition on.
Connect a voltmeter between vacuum pump connector terminal #1 and ground.
The voltmeter should read approximately 10 V.
OK - Checking the cable to the vacuum pump
Not OK - Checking for an open-circuit
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Checking for an open-circuit
- Ignition off.
- Check the cable between vacuum pump connector terminal #1 and control module connector terminal #12 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification of the governor
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Checking the cable to the vacuum pump
- Ignition off.
- Disconnect the control module.
- Vacuum pump removed.
Connect a voltmeter between vacuum pump connector terminal #3 and ground.
The ohmmeter should read infinite resistance.
OK - Checking the voltage to the vacuum pump
Not OK - Checking for a short-circuit
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Checking for a short-circuit
- Ignition off.
- Check the cable between vacuum pump connector terminal #3 and control module connector terminal #1 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification of the governor
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Checking the voltage to the vacuum pump
- Ignition off.
- Connect the control module.
- Vacuum pump removed.
- Ignition on.
Connect a voltmeter between vacuum pump connector terminal #3 and ground.
The voltmeter should read approximately 0 V.
OK - Checking the resistance in the cable
Not OK - Checking for a short-circuit
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Checking for a short-circuit
- Ignition off.
- Check the cable between vacuum pump connector terminal #3 and control module connector terminal #1 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification of the governor
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Checking the resistance in the cable
- Ignition off.
- Disconnect the control module.
- Vacuum pump removed.
Connect an ohmmeter between vacuum pump connector terminal #3 and control module connector terminal #1.
The ohmmeter should read approximately 0 ohms
OK - Checking the governor
Not OK - Checking for an open-circuit
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