DTC P16E2 (2017 2018 2019)
DTC P16E2 : PGM-FI-ACG LIN Communication Error
NOTE:
- Before you troubleshoot, review the general troubleshooting information .
- If the vehicle has an AGM type 12 volt battery, do the 12 volt battery test after this troubleshooting procedure to check the 12 volt battery performance.
- Check for a loose terminal on the alternator (+B terminal). If the alternator +B terminal was loose, DTC P16E2 will be stored.
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P16E2 PGM-FI - ACG LIN Communication Error |
DTC (PGM-FI)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS, and wait for 10 seconds.
-3. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P16E2 PGM-FI - ACG LIN Communication Error Is DTC P16E2 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .
- DTC check
-1. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P16E7 PGM-FI-Battery Fan LIN Communication Error Is DTC P16E7 indicated?
YES
Go to step 3.
NO
Go to step 7.
- Determine possible failure area (short in LIN/LIN (ACG) line, others)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Alternator 1P connector -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Alternator 1P connector: disconnected Test point 1 Alternator 1P connector (female terminal) No. 1: Test point 2 Body ground Is there continuity?
YES
Go to step 4.
NO
Go to step 5.
- Shorted wire check (LIN/LIN (ACG) line)
-1. Jump the SCS line with the HDS, and wait more than 1 minute.
-2. Continue to check for continuity between the alternator 1P connector terminal and body ground, while disconnecting these connectors, one at a time:
- PCM connector A (50P)
- 12 volt battery fan motor 3P connector
- Shutter grille 4P connector (with shutter grille system)
- DC-DC converter connector A (3P) (with auto idle stop system)
Does continuity go away when one of the above connectors is disconnected?
YES
The LIN/LIN (ACG) wire is OK. Replace the part that caused an open when it was disconnected.
NO
Repair a short in the LIN/LIN (ACG) wire between the PCM (A24), the alternator, the 12 volt battery fan motor, the shutter grille, and the DC-DC converter.
- Determine possible failure area (alternator, others)
-1. Reconnect the alternator 1P connector.
-2. Disconnect the following connector.
12 volt battery fan motor 3P connector -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode 12 volt battery fan motor 3P connector: disconnected Test point 1 12 volt battery fan motor 3P connector (male terminals) No. 2: Test point 2 Body ground Is there continuity?
YES
NO
Go to step 6.
- Open wire check (LIN/LIN (ACG) line)
-1. Jump the SCS line with the HDS, and wait more than 1 minute.
-2. Disconnect the following connectors.
Alternator 1P connector PCM connector A (50P) -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode 12 volt battery fan motor 3P connector: disconnected Alternator 1P connector: disconnected PCM connector A (50P): disconnected Test point 1 Alternator 1P connector (female terminal) No. 1: Test point 2 PCM connector A (50P) No. 24 Is there continuity?
YES
The LIN/LIN (ACG) wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P16E2 goes away and the PCM was substituted, replace the original PCM .
NO
Repair an open in the LIN/LIN (ACG) wire between the PCM (A24) and the alternator.
- Open wire check (LIN/LIN (ACG) line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Jump the SCS line with the HDS, and wait more than 1 minute.
-3. Disconnect the following connectors.
Alternator 1P connector PCM connector A (50P) -4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Alternator 1P connector: disconnected PCM connector A (50P): disconnected Test point 1 Alternator 1P connector (female terminal) No. 1: Test point 2 PCM connector A (50P) No. 24 Is there continuity?
YES
The LIN/LIN (ACG) wire is OK. Replace the alternator .
NO
Repair an open in the LIN/LIN (ACG) wire between the PCM (A24) and the alternator.