B3622

DTC B3622

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC B3622 07
- Steering Wheel Controls Signal Circuit




Circuit/System Description

The body control module (BCM) monitors the signal circuit voltage. If the voltage level is too high, damage may result in the system. When a high voltage condition is detected, the BCM will ignore the switch command.


Conditions for Running the DTC

Ignition ON.


Conditions for Setting the DTC

BCM detects voltage above 18.5 volts for 100 msec.


Action Taken When the DTC Sets

BCM will ignore the switch command.


Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present and the DTC is cleared with a scan tool.
* The BCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive ignition cycles.



Diagnostic Aids

Test the charging system. Refer to Charging System Test (Charging System Test) .