Pinpoint Test W: P0A4C
- NOTE: The Secondary Inverter System Controller (S-ISC) is referred to as the SOBDMB (Secondary On-Board Diagnostic Control Module B) in the scan tool.
Normal Operation and Fault Conditions
REFER to: Front Electric Drive Assembly - System Operation and Component Description .
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition SOBDMB P0A4C:00 Generator Position Sensor Circuit Range/Performance: No Sub Type Information This DTC sets when an error is detected with the position reading's rationality check. Possible Sources
- Secondary Inverter System Controller (S-ISC)
- W1 CHECK FOR SECONDARY INVERTER SYSTEM CONTROLLER (S-ISC) DIAGNOSTIC TROUBLE CODES (DTCS)NOTE: Wiring overlays or repinning of circuits are NOT appropriate due to risk of hardware damage.
- Ignition ON.
- CLEAR the Secondary Inverter System Controller (S-ISC) DTCs.
- Using a diagnostic scan tool, run the Secondary Inverter System Controller (S-ISC) self-test.
Is DTCs P0A4C the only DTC present?
Yes GO to W2 No DIAGNOSE all other Secondary Inverter System Controller (S-ISC) DTCs. REFER to Diagnostic Trouble Code (DTC) Chart . - W2 CHECK THE SECONDARY INVERTER SYSTEM CONTROLLER (S-ISC) CALIBRATION LEVEL
- Verify the Secondary Inverter System Controller (S-ISC) is at the latest calibration level.
Is the Secondary Inverter System Controller (S-ISC) at the latest calibration level?
Yes GO to W4 No UPDATE the Secondary Inverter System Controller (S-ISC) to the latest calibration level. GO to W3 - W3 TEST DRIVE VEHICLE
- CLEAR the Secondary Inverter System Controller (S-ISC) DTCs.
- Test drive the vehicle, accelerate and decelerate quickly.
- Using a diagnostic scan tool, run the Secondary Inverter System Controller (S-ISC) self-test.
Is DTCs P0A4C present?
Yes GO to W4 No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. - W4 CHECK FOR APPLICABLE SERVICE ARTICLES
- CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA.
Was a service article found?
Yes DISCONTINUE this test and FOLLOW the service article instructions. No If DTCs P0A4C is the only DTCs present, INSTALL a new Secondary Inverter System Controller (S-ISC). REFER to: Inverter System Controller [SOBDMB]
If DTC P0A4C is not the only DTCs present, DIAGNOSE all other Secondary Inverter System Controller (S-ISC) DTCs. REFER to Diagnostic Trouble Code (DTC) Chart .