Test E: The Powertrain Control Module (PCM) Does Not Respond To The Diagnostic Tool
PINPOINT TEST E: THE POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOLE1-E2:
E2-E3:
Normal Operation
The PCM communicates with the diagnostic tool through the high speed controller area network (CAN), circuits 1827 (WH/LG) and 1828 (PK/LG). Check circuits 1827 (WH/LG) and 1828 (PK/LG) between the PCM C175b and the data link connector (DLC) C251.The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the high speed CAN circuits, damage to the DLC C251, damage to the PCM C175b, or damage to an in-line connector.
Possible Causes
- high speed CAN circuit 1827 (WH/LG) open
- high speed CAN circuit 1828 (PK/LG) open
- PCM C175b
- PCM