Operation CHARM: Car repair manuals for everyone.

Flag 67

Circuit Fault Chart Part 1 Of 2:





Circuit Fault Chart Part 1 Of 2:






Low Voltage Chart:






Handwheel Sensor Wiring:






DESCRIPTION
The handwheel sensor (HWS) is used to determine the rate at which the steering wheel is being turned. The PCM calculates the rate of change in the sensor signal to determine the control cycle of the steering orifice solenoid. The duty cycle applied to the electronic variable orifice steering (EVO) solenoid controls the amount of power assist applied to the steering gear.

INFORMATION FLAG PARAMETERS
Information Flag 67 will set if:
^ Vehicle speed is 8-48 KPH (5-30 MPH).
^ Handwheel reads greater than 4.8 volts.
^ Handwheel reads less than 0.2 volts.

DIAGNOSTIC AIDS

^ If Information Flag 54 is set with Flag 67 diagnose Flag 54 first.


^ When attempting to diagnose an intermittent problem use the Scan Tool to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem. Select MALF History from Scan Tool EC menu.


^ Check the tightness of the female terminal grip with a spare male terminal.


TO DISCONNECT HWS:
- Locate HWS on steering column (under dash, approx. five inches from bulkhead).
- Remove HWS from support bracket by pressing both locking tabs.
- Rotate HWS 180 degrees so the connector is on bottom.
- Push connector locking tab and disconnect harness.

NOTICE: Information flags should be used for diagnostic purposes only. They do not necessarily indicate component malfunction/failure.

^ Flag 67 may set if the drive wheels are operated while vehicle is on a hoist.