Normal Operation

The PSCM communicates with the diagnostic scan tool and other module through the HS-CAN.

If the PSCM cannot communicate with the diagnostic scan tool or other modules, the EPAS system defaults to a pre-determined vehicle speed setting and the customer may experience a lack of assist or a heavy steering feel.

This test generates a RVC for a new PSCM when directed to do so from a appropriate pinpoint test.

1. AF1: CONFIRM PSCM REPLACEMENT WAS DIRECTED BY A APPROPRIATE TEST 

   Did a pinpoint test in MODULE COMMUNICATIONS NETWORK -- (ELECTRIC) direct to install a new PSCM? 

   Yes	No
   INSTALL a new EPAS gear. REFER to Steering Gear  .	Go to AF2.

2. AF2: CHECK FOR CORRECT PSCM OPERATION 

   Ignition OFF.

   PSCM_A connector disconnected. (C1463A)

   PSCM-B connector disconnected. (C1463B)

   PSCM_C connector disconnected.

   Disconnect all PSCM related in-line electrical connectors.

   Using a good light source, inspect the disconnected electrical connectors for the following:

   • corrosion - install new connector or terminal and clean the module pins
   • damaged or bent pins - install new terminals or pins
   • pushed-out pins - install new pins as necessary
   • spread terminals - install new terminals as necessary.

   Repair the connectors as necessary

   PSCM_A connector connected. (C1463A)

   PSCM_B connector connected. (C1463B)

   PSCM_C connector connected.

   Connect all PSCM related in-line electrical connectors.

   Operate the system and determine if the concern is still present.

   Is the concern still present? 

   Yes	No
   INSTALL a new EPAS column. REFER to STEERING COLUMN .	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.