DTC Advanced Diagnostics: P16E2
DTC P16E2:PGM-FI-ACG LIN Communication Error

General Description

The local interconnect network (LIN) transmits/receives signals to/from the alternator. If the powertrain control module (PCM) receives incorrect information from the alternator, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
1.5 seconds or more
DTC Type
One drive cycle, MIL off

Enable Conditions
Condition
Minimum
Maximum
Elapsed time after the vehicle is turned to the ON mode
3 seconds
–
12 volt battery voltage [Battery]*
10.04 V
–
*: For at least 5 seconds
[ ]: HDS Parameter

Malfunction Threshold
Any of the conditions is met for at least 1.5 seconds:
Checksum error
There is a mismatch in the checksum.
Frame error
There is a deviation in the LIN frame.
Header timeout error
There is a fault in the LIN line caused by problems with the physical layer connection.
Message timeout error
The slave node is unable to respond as an acknowledgment to the header frame from the master node.
Overrun error
LIN frame has been overwritten in the receive buffer by another frame before the previous frame was read.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Alternator LIN line open
Alternator LIN line short to ground
Alternator failure
PCM internal circuit failure

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, 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.