Advanced Diagnostics

Advanced Diagnostics - DTC P16D7: Powertrain Control Module (PCM) Internal F-CAN Communication Circuit Malfunction






General Description
The controller area network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL). When F-CAN communication between the FI CPU and the CVT CPU inside the powertrain control module (PCM) is abnormal and F-CAN communication is interrupted for a specified time, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
No signals from the FI CPU via the F-CAN lines are received for at least 1.5 seconds.

Driving Pattern
Turn the ignition switch to ON (II), and wait for at least 5 seconds.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the D indicator blinks, and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.

Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.