DTC P16E3: PGM-FI-Battery Sensor LIN Communication Error

NOTE: 

• Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .
• Check for loose terminals on the 12 volt battery sensor (12 volt battery negative (-) terminal).

DTC (PGM-FI)

• 1. 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	Freeze Frame
  P16E3 PGM-FI-Battery Sensor LIN Communication Error

  Is DTC P16E3 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 12 volt battery sensor and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

• 2. DTC check:

  - 1. Check for Pending or Confirmed DTCs with the HDS.

  DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
  P16E2 PGM-FI-ACG LIN Communication Error

  Is DTC P16E2 indicated?

  YES 

  Go to step 3.

  NO 

  Go to step 7.

• 3. Determine possible failure area (LIN(BATT SENSOR)/LIN circuit shorted, others):

  - 1. Turn the vehicle to the OFF (LOCK) mode.

  - 2. Disconnect the following connector.

  12 volt battery sensor 2P connector

  - 3. Check for continuity between test points 1 and 2.

  Test condition	Vehicle OFF (LOCK) mode
  	12 volt battery sensor 2P connector: disconnected

  Test point 1	12 volt battery sensor 2P connector No. 2
  Test point 2	Body ground

  Courtesy of HONDA, U.S.A., INC.

  Is there continuity?

  YES 

  Go to step 4.

  NO 

  Go to step 5.

• 4. Shorted wire check (LIN(BATT SENSOR)/LIN line):

  - 1. Jump the SCS line with the HDS, and wait more than 1 minute.

  - 2. Continue to check for continuity between the 12 volt battery sensor 2P connector terminal No. 2 and body ground, while disconnecting these connectors, one at a time:

  • PCM connector B (51P)
  • Alternator 1P connector

  Courtesy of HONDA, U.S.A., INC.

  Does continuity go away when one of the above connectors is disconnected?

  YES 

  The LIN(BATT SENSOR)/LIN wire is OK. Replace the part that caused an open when it was disconnected.

  NO 

  Repair a short in the LIN(BATT SENSOR)/LIN wire between the 12 volt battery sensor, the alternator, and the PCM (B40).

• 5. Determine possible failure area (12 volt battery sensor, others):

  - 1. Turn the vehicle to the OFF (LOCK) mode.

  - 2. Reconnect the 12 volt battery sensor 2P connector.

  - 3. Disconnect the following connector.

  Alternator 1P connector

  - 4. 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 No. 1
  Test point 2	Body ground

  Courtesy of HONDA, U.S.A., INC.

  Is there continuity?

  YES 

  Replace the 12 volt battery sensor .

  NO 

  Go to step 6.

• 6. Open wire check (LIN(BATT SENSOR)/LIN line):

  - 1. Jump the SCS line with the HDS, and wait more than 1 minute.

  - 2. Disconnect the following connectors.

  12 volt battery sensor 2P connector

  PCM connector B (51P)

  - 3. Check for continuity between test points 1 and 2.

  Test condition	Vehicle OFF (LOCK) mode
  	12 volt battery sensor 2P connector: disconnected
  	Alternator 1P connector: disconnected
  	PCM connector B (51P): disconnected
  Test point 1	12 volt battery sensor 2P connector No. 2
  Test point 2	PCM connector B (51P) No. 40

  Courtesy of HONDA, U.S.A., INC.

  Is there continuity?

  YES 

  The LIN(BATT SENSOR)/LIN wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P16E3 goes away and the PCM was updated, troubleshooting is complete. If DTC P16E3 goes away and the PCM was substituted, replace the original PCM .

  NO 

  Repair an open in the LIN(BATT SENSOR)/LIN wire between the 12 volt battery sensor and the PCM (B40).

• 7. Fuse check:

  - 1. Turn the vehicle to the OFF (LOCK) mode.

  - 2. Check the following fuse.

  Fuse	No. A14 (10 A)
  Location	Under-hood fuse/relay box

  Is the fuse OK?

  YES 

  Go to step 8.

  NO 

  Repair a short in the +B HORN wire between the 12 volt battery sensor and the No. A14 (10 A) fuse in the under-hood fuse/relay box. Also replace the No. A14 (10 A) fuse.

• 8. Open wire check (+B HORN line):

  - 1. Disconnect the following connector.

  12 volt battery sensor 2P 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 sensor 2P connector: disconnected
  Test point 1	12 volt battery sensor 2P connector No. 1
  Test point 2	Body ground

  Courtesy of HONDA, U.S.A., INC.

  Is there battery voltage?

  YES 

  Go to step 9.

  NO 

  Repair an open in the +B HORN wire between the 12 volt battery sensor and No. A14 (10 A) fuse in the under-hood fuse/relay box.

• 9. Open wire check (LIN(BATT SENSOR)/LIN 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 connector.

  PCM connector B (51P)

  - 4. Check for continuity between test points 1 and 2.

  Test condition	Vehicle OFF (LOCK) mode
  	12 volt battery sensor 2P connector: disconnected
  	PCM connector B (51P): disconnected
  Test point 1	12 volt battery sensor 2P connector No. 2
  Test point 2	PCM connector B (51P) No. 40

  Courtesy of HONDA, U.S.A., INC.

  Is there continuity?

  YES 

  The LIN(BATT SENSOR)/LIN wire is OK. Replace the 12 volt battery sensor .

  NO 

  Repair an open in the LIN(BATT SENSOR)/LIN wire between the 12 volt battery sensor and the PCM (B40).