DTC P16E7 (19-21 9-Speed A/T)
DTC P16E7 : PGM-FI-Battery Fan LIN Communication Error
NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems .
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P16E7 PGM-FI-Battery Fan LIN Communication Error |
DTC (PGM-FI)
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Clear the DTC with the HDS.
- 3. Turn the vehicle to the OFF (LOCK) mode.
- 4. Turn the vehicle to the ON mode, and wait 10 seconds.
- 5. 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
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 battery fan motor 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 - Refer to: How to Troubleshoot the Fuel and Emissions Systems .
- DTC check
- 1. 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
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.
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
Go to step 4.
NO
The LIN/LIN (ACG) wire is not shorted. 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 12 volt battery fan motor 3P connector terminal No. 2 and body ground, while disconnecting these connectors, one at a time:
- PCM connector A (50P)
- Alternator 1P connector
- DC-DC converter connector A (3P)
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, and the DC-DC converter.
- Determine possible failure area (12 volt fan motor, others)
- 1. Reconnect the 12 volt battery fan motor 3P connector.
- 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 terminals) No. 1: Test point 2 Body ground Is there continuity?
YES
Replace the 12 volt battery fan motor .
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.
PCM connector A (50P) 12 volt battery fan motor 3P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Alternator 1P connector: disconnected 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 PCM connector A (50P) No. 24 - Refer to:
PCM Connector for Inputs and Outputs (19-21 9-Speed A/T)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. - Refer to:
PCM Removal and Installation (19-21 9-Speed A/T) .
If DTC P16E7 goes away and the PCM was substituted, replace the original PCM - Refer to:
PCM Removal and Installation (19-21 9-Speed A/T) .
NO
Repair an open in the LIN/LIN (ACG) wire between the PCM (A24) and the 12 volt battery fan motor.
- Fuse check
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Check the following fuse.
Fuse No. C28 - Refer to:
Fuse to Components Index (Without Auto Idle Stop System) (2019 2020 2021), or
Fuse to Components Index (With Auto Idle Stop System) (2019 2020 2021)Is the fuse OK?
YES
The IG1 OPTION wire is not shorted. Go to step 8.
NO
Repair a short in the IG1 OPTION wire between the battery fan motor and the No. C28 fuse. Also replace the No. C28 fuse.
- Open wire check (IG1 OPTION line)
- 1. Disconnect the following connector.
12 volt battery fan motor 3P connector - 2. Turn the vehicle to the ON mode.
- 3. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode 12 volt battery fan motor 3P connector: disconnected Test point 1 12 volt battery fan motor 3P connector (male terminals) No. 3: Test point 2 Body ground Is there battery voltage?
YES
The IG1 OPTION wire is OK. Go to step 9.
NO
Repair an open in the IG1 OPTION wire between No. C28 fuse and the12 volt battery fan motor. - Refer to:
Fuse to Components Index (Without Auto Idle Stop System) (2019 2020 2021) or
Fuse to Components Index (With Auto Idle Stop System) (2019 2020 2021)
- Open wire check (BATT FAN GND line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. 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. 1: Test point 2 Body ground Is there continuity?
YES
Replace the 12 volt battery fan motor .
NO
Repair an open in the BATT FAN GND wire between the 12 volt battery fan motor and G301.