Cruise Control (ECM/PCM) Input Test (2013-15)
NOTE: Always make sure that you have the latest HDS software.
1. Connect the HDS to the DLC - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2013-15), or How to Troubleshoot the A/T System (2013-15) .
2. Press the engine start/stop button to select the ON mode.
3. Make sure the HDS communicates with the vehicle and the PCM. If it does not communicate, troubleshoot the DLC circuit .
4. Check for and troubleshoot any DTCs - Refer to: A/T System DTC Troubleshooting Index (USA and Canada models) (2013-18), or Fuel and Emissions Systems DTC Troubleshooting Index (USA and Canada models) (2013-14), or Fuel and Emissions Systems DTC Troubleshooting Index (2015-15) .
5. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.
6. If the input tests prove OK, replace the PCM .
NOTE: Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs, flex the circuit wires, and note if any of the test results change.
| Signal to be tested | Test condition | Parameter: Desired result | Possible cause if result is not obtained |
|---|---|---|---|
| Cruise control main switch signal | Cruise control main button pressed and released | CRUISE MASTER (MAIN) SW should indicate ON when the cruise control main button is pressed and OFF when the cruise control main button is released. |
|
| Set switch signal | Decel/set button pressed and released | CRUISE SET SW should indicate ON when the decel/set button is pressed and OFF when the decel/set button is released. |
|
| Resume switch signal | Res/accel button pressed and released | CRUISE RESUME SW should indicate ON when the res/accel button is pressed and OFF when the res/accel button is released. |
|
| Cancel switch signal | Cancel button pressed and released | CRUISE CANCEL SW should indicate ON when the cancel button is pressed and OFF when the cancel button is released. |
|
| Signal to be tested | Test condition | Parameter: Desired result | Possible cause if result is not obtained |
|---|---|---|---|
| Cruise control indicator signal | Start the engine, press the cruise control main button on and drive the vehicle above 25 mph (40 km/h) with the cruise control set and cancel the cruise control | CRUISE INDICATOR should indicate ON when the cruise control is set and OFF when the cruise control is cancelled. |
|
| Brake pedal position switch signal | Brake pedal pressed, then released | CRUISE BRAKE SW/IDLE STOP SW should indicate OPEN when the brake pedal is pressed and CLOSE when the brake pedal is released. |
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