Using J 42958 Cruise Control Tester

Steps 1-10:

Steps 11-24:

Steps 25-38:

Steps 39-46:

DIAGNOSTIC AIDS

IMPORTANT: Perform the following in order to avoid misdiagnosis.
^ Inspect for proper operation of brake lamps and clutch switch, if equipped.
^ Inspect throttle linkage for mechanical binding which could cause the system to malfunction.
^ Inspect cruise control cable adjustment, should have minimum slack.
^ EMI on the speed sensor signal circuit may cause erratic cruise control operation.

CONDITIONS FOR ENABLING CRUISE CONTROL
The vehicle speed is greater than 40 km/h (25 mph).