For 1990-2009 cars

For the cruise control Diagnostic Trouble Code (DTC) information refer to Diagnostic Trouble Code (DTC) List - Vehicle.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Check fuse F13. Is fuse blown? | -- | Go to Step 2 | Go to Step 3
2 |

1. Check for a short circuit and repair it, if necessary.
2. Replace the blown fuse.

Is the repair complete?

--

System OK

--

3 |

1. Turn the ignition ON.
2. Check the voltage at F13.

Is the voltage equal to the specified value?

11-14V

Go to Step 5

Go to Step 4

4 | Repair the power supply to the fuse. Is the repair complete? | -- | System OK | --
5 |

1. Turn the ignition ON.
2. Turn the cruise control switch OFF.
3. Use a voltmeter to check the voltage at terminal 17 of the X5 body control module (BCM) connector.

Is the voltage equal to the specified value?

11-14V

Go to Step 7

Go to Step 6

6 | Repair the short to voltage between the cruise control on switch and the X5 BCM connector terminal 17. Is the repair complete? | -- | System OK | --
7 |

1. Turn the ignition ON.
2. Turn the cruise control switch ON.
3. Use a voltmeter to check the voltage at terminal 17 of the X5 BCM connector.

Is the voltage equal to the specified value?

11-14V

Go to Step 9

Go to Step 8

8 | Repair the open circuit between fuse F13 and the terminal 17 of the X5 BCM connector. Is the repair complete? | -- | System OK | --
9 |

1. Turn the ignition ON.
2. Turn the cruise control switch ON.
3. Check the voltage at terminals 3 and 17 of the X5 BCM connector.

Is the voltage equal to the specified value?

11-14V

System OK

Go to Step 10

10 | Replace the cruise control switch. Is the repair complete? | -- | System OK | --