When Monitored And Set Conditions
WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: continuously when the following condition is met:
- Ignition on.
Set Conditions:
- If the HVAC Module detects the Blower Motor Control circuit Pulse Width Modulation (PWM) is less than 0% and or greater than 100% or PWM equals 0% for the period of 30 seconds.
| Possible Causes |
|---|
| BLOWER CONTROL CIRCUIT SHORTED TO VOLTAGE |
| BLOWER MOTOR CONTROL MODULE |
| HVAC MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .