Chrysler DTC P1596 – Speed Control Switch Always High
DTC P1596 meaning on Chrysler
DTC P1596 on a Chrysler vehicle indicates that the Speed Control Switch input signal is always high. This means that the powertrain control module (PCM) is receiving a constant high voltage signal from the speed control switch, even when the switch is not activated.
Chrysler DTC P1596 symptoms
Symptoms of DTC P1596 on a Chrysler may include:
- Speed control system not functioning
- Cruise control not engaging
- Check Engine Light illuminated
Chrysler DTC P1596 causes
Common causes of DTC P1596 on a Chrysler include:
- Faulty speed control switch
- Short circuit in the wiring related to the speed control switch
- Defective PCM
Chrysler DTC P1596 seriousness
While DTC P1596 is not a critical issue that affects the drivability of the vehicle, it can lead to the speed control system not working properly. It is recommended to address this issue to ensure the proper functioning of the cruise control system.
How to diagnose DTC P1596 on Chrysler
To diagnose DTC P1596 on a Chrysler, a mechanic may perform the following steps:
- Use a scan tool to retrieve the fault codes stored in the PCM
- Inspect the speed control switch and its wiring for any visible damage or corrosion
- Check the voltage signal from the speed control switch using a multimeter
- Perform a continuity test on the wiring related to the speed control switch
How to fix DTC P1596 on Chrysler
To fix DTC P1596 on a Chrysler, the following steps may be taken:
- Replace the faulty speed control switch if necessary
- Repair any damaged or shorted wiring related to the speed control switch
- If the PCM is determined to be defective, it may need to be replaced and reprogrammed
How to erase DTC P1596 on Chrysler
To erase DTC P1596 on a Chrysler, the fault codes can be cleared using a scan tool. After the repair has been made, the codes can be reset, and the Check Engine Light should turn off if the issue has been resolved.
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