Test H: The Steering Is Very Difficult/Very Easy
Pinpoint Test H: The Steering is Very Difficult/Very EasyNormal Operation
The power steering control module receives voltage through circuits 838 (LG/VT) and 601 (LB/PK) and ground through circuit 57 (BK). The power steering control module sends power to the toque sensor through circuit 997 (BN/OG) and provides a ground path for the torque sensor through circuit 1221 (WH/OG). The power steering control module receives signals from the torque sensor through circuits 998 (YE/LG), 1572 (DG), and 1573 (YE) which is dependent upon the torque being requested by the steering input. The power steering control module sends varying amperage through circuits 3140 (BK). and 3141 (WH) dependent upon the desired output of the power steering control module.
H1-H2:
H3-H4:
H5-H7:
H7-H8:
H9-H10:
H11-H13:
CAUTION: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
Possible Causes
Circuit 997 (BN/OG) open or shorted to ground Circuit 998 (YE/LG) open, shorted to power or shorted to ground Circuit 1221 (WH/OG) open or shorted Circuit 1572 (DG) open, shorted to power or shorted to ground Circuit 1573 (YE) open, shorted to power or shorted to ground Circuit 3140 (BK) open, shorted to power or shorted to ground Circuit 3141 (WH) open, shorted to power or shorted to ground Power steering control module Intermediate shaft U-joints Steering column bearings
^ Ball joints
^ Strut bearings
^ Steering gear