D: 457/458/459 Speed Control Switches

Stop-Warning

You should enter this Pinpoint Test only when a Diagnostic Trouble Code (DTC) 457, 458 or 459 is received in the KOEO Self-Test.

To prevent the replacement of good components, be aware that the following non-IVSC areas may be at fault:

- Horn relay and bracket.

- Fuse.








This Pinpoint Test is intended to diagnose only the following:

- Speed control actuator switch assembly.

- Air bag sliding contact.

- Wiring harness.

- Powertrain control module.