DTC P16E7 (6-Speed A/T, 16-18 9-Speed A/T)

DTC P16E7  : Battery Blower LIN Communication Error

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

DTC (PGM-FI)

1. Problem verification

   - 1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

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

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P16E7 Battery Blower 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 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 - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

2. Determine possible failure area (IG1 OPTION line, BATT FAN GND line, others)

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

   - 2. Disconnect the following connector.

   Battery fan motor 3P connector

   - 3. Turn the vehicle to the ON mode.

   - 4. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Battery fan motor 3P connector: disconnected
   Test point 1	Battery fan motor 3P connector No. 1
   Test point 2	Battery fan motor 3P connector No. 3

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

   Is there battery voltage?

   YES 

   Go to step 3.

   NO 

   Go to step 7.

3. Determine possible failure area (LIN/LIN (ACG) line shorted, others)

   - 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
   	Battery fan motor 3P connector: disconnected
   Test point 1	Battery fan motor 3P connector No. 2
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Go to step 4.

   NO 

   The LIN/LIN (ACG) wire is not shorted. Go to step 5.

4. 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 battery fan motor 3P connector terminal No. 2 and body ground, while disconnecting these connectors, one at a time:

   • PCM connector B (51P)
   • Alternator 1P connector
   • 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 (B50), the alternator, the battery fan motor, and the DC-DC converter.

5. 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 connector.

   PCM connector B (51P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector B (51P): disconnected
   	Battery fan motor 3P connector: disconnected
   Test point 1	Battery fan motor 3P connector No. 2
   Test point 2	PCM connector B (51P) No. 50 - Refer to: PCM Connector for Inputs and Outputs (16-18 9-Speed A/T), or PCM Connector for Inputs and Outputs (16-20 6-Speed A/T)

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

   Is there continuity?

   YES 

   The LIN/LIN (ACG) wire is OK. Go to step 6.

   NO 

   Repair an open in the LIN/LIN (ACG) wire between the PCM (B50) and the battery fan motor.

6. Battery fan motor check (substitution)

   - 1. Substitute a known-good battery fan motor.

   - 2. Reconnect all connectors.

   - 3. Turn the vehicle to the ON mode.

   - 4. Clear the DTC with the HDS.

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

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P16E7 Battery Blower LIN Communication Error

   Is DTC P16E7 indicated?

   YES 

   Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good PCM - Refer to: PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T), .

   NO 

   Replace the original battery fan motor .

7. Fuse check

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

   - 2. Check the following fuse.

   Fuse	No. C28 (10 A)
   Location	Under-dash fuse/relay box

   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 (10 A) fuse. Also replace the No. C28 (10 A) fuse.

8. Open wire check (IG1 OPTION line)

   - 1. Turn the vehicle to the ON mode.

   - 2. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Battery fan motor 3P connector: disconnected
   Test point 1	Battery fan motor 3P connector No. 3
   Test point 2	Body ground

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

   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 (10 A) fuse in the under-dash fuse/relay box and the battery fan motor.

9. 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
   	Battery fan motor 3P connector: disconnected
   Test point 1	Battery fan motor 3P connector No. 1
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Replace the battery fan motor .

   NO 

   Repair an open in the BATT FAN GND wire between the battery fan motor and G301.