B3794

DTC B3794

CIRCUIT DESCRIPTION

CAUTION: Refer to SIR Caution in Service Precautions.

Disable the inflatable restraint steering wheel module when performing this diagnostic table. Refer to SIR Disabling and Enabling Zone 3 in Restraint Systems.

The cruise control switch is an input to the body control module (BCM). The BCM monitors the cruise control set/coast and resume/accelerate switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The BCM detects a specific voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit when a switch is applied.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B3794 Cruise Control Function Request Circuit

CONDITIONS FOR RUNNING THE DTC
- The cruise switch is ON.
- The ignition is ON.

CONDITIONS FOR SETTING THE DTC
- The BCM detects an invalid voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit.
- The above condition is present for greater than 1 second.

ACTION TAKEN WHEN THE DTC SETS
- The BCM stores the DTC information into memory when the diagnostic runs and fails.
- The malfunction indicator lamp (MIL) will not illuminate.
- The Cruise Control System is disabled.

CONDITIONS FOR CLEARING THE DTC
- The DTC becomes history when the fault is no longer present.
- A History DTC clears after 100 malfunction-free ignition cycles.
- The BCM receives a clear code command from the scan tool.

DIAGNOSTIC AIDS
- Rotate the steering wheel to both steering stops and activate each cruise control switch separately. With a scan tool, observe the Cruise Control Switch parameter in the BCM Cruise Control data list. This will help eliminate the possibility of a internally open or shorted inflatable restraint steering wheel module coil.
- For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics

TEST DESCRIPTION

Step 1 - Step 9:

Step 10 - Step 17:

The number below refers to the step number on the diagnostic table.
2. This step determines if a condition is present.