Pinpoint Test F - Speed Does Not Decrease During Dynamic Test

You should enter this pinpoint test only when service code 37 is received in the KOER Self-Test. This pinpoint test is intended to diagnose the following:

• Actuator cable
• Throttle shaft and linkage
• Throttle position sensor
• ECA

1. Service Code 37, repeat KOER Self-Test of QUICK TEST. Be sure that the speed control ON button is pressed before pressing the STAR push button. If code 37 is still present, then go to step 2. If there is no code 37, then decrease the vehicle speed, test passed. Service any other service code(s) as necessary.
2. Check for throttle shaft/linkage binding, is the throttle shaft or throttle linkage binding, maintaining a part throttle opening? If yes, service to eliminate binding. Repeat Quick Test. If no, then go to step 3.
3. Check for speed control linkage binding. Is the actuator cable binding? If yes replace the actuator cable. Repeat Quick Test. If no, then go to step 4.
4. Check for throttle position sensor binding. Is the throttle position sensor binding at a part throttle opening? If yes replace the throttle position sensor. Repeat Quick Test. If no, then replace the ECA. Repeat Quick Test.