DTC 1306: Vehicle Speed Pulse

WARNING: This page is about a different variant/trim than selected.

NOTE:

Check the vehicle battery condition first .
This navigation DTC sets when there is a problem with the VSP circuit.
Check the GPS reception in an open area.
Aftermarket metallic window tint or electronic devices located near the audio-navigation unit or the GPS antenna can potentially interfere with the operation of the navigation system.
Before you troubleshoot, make sure to follow the General Troubleshooting Information - Refer to: How to Troubleshoot the Navigation System, or How to Troubleshoot the Navigation System (Display Audio) (2016-17) .
Check any official Honda service website for more service information about the navigation system.
Check the connectors for poor connections or loose terminals.

Problem verification
-1. Clear the hard error codes.

- 2. Test-drive the vehicle at steady speed more than 12 mph (20 km/h) for about 1 minute.

- 3. Check for hard error codes.

Is DTC 1306 indicated?

YES

The failure is duplicated, go to step 2.

NO

Intermittent failure, the system is OK at this time.
Determine possible failure area (audio-navigation unit, others)
-1. Go into the System Diagnostic Mode, and select the Car Status in the System Links to check the vehicle speed pulse.

- 2. With the help of an assistant test-drive the vehicle, and watch the VSP signal.

Does the VSP signal change from [0] (stopped) to [1] (driving) as you drive?

YES

Go to step 3.

NO

Go to step 4.
PCM check
-1. Substitute a known-good PCM.

- 2. Clear the hard error codes.

- 3. Press the engine start/stop button to select the OFF mode and then select the ON mode.

- 4. Check for hard error codes.

Is DTC 1501 indicated?

YES

Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation, or Audio-Navigation Unit Removal and Installation (Display Audio) (2016-17) .

NO

Replace the original PCM.

Determine possible failure area (PCM, others)

-1. Press the engine start/stop button to select the OFF mode.

- 2. Disconnect the following connector.

PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (V6), or How to Troubleshoot the Fuel and Emissions Systems (L4), or How to Troubleshoot the A/T System (A/T) (2013 2014 2015), or How to Troubleshoot the CVT System (CVT) (2013 2014 2015), or How to Troubleshoot the A/T System (A/T) (2016-17), or How to Troubleshoot the CVT System (CVT) (2016-17)

- 3. Press the engine start/stop button to select the ON mode.

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

Test condition	ON mode
	PCM connector A (51P): disconnected
Test circuit	VSP

J35Y1, Y2 engine

Test point 1	PCM connector A (51P) No. 49 (RED)
Test point 2	Body ground

K24W1 engine

Test point 1	PCM connector A (51P) No. 25 (RED)
Test point 2	Body ground

J35Y1, Y2 engine

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

K24W1 engine

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

Is there about 5.0 V?

YES

The VSP wire is OK. Go to step 5.

Go to step 6.

PCM check

-1. Press the engine start/stop button to select the OFF mode.

- 2. Reconnect PCM connector A (51P) No. 49 or No. 25.

- 3. Raise the vehicle on a lift.

- 4. Press the engine start/stop button to select the ON mode.

- 5. Block or hold one tire so that it cannot rotate, and slowly rotate the other front tire.

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

Test condition	ON mode, with the front tire slowly rotating
Test circuit	VSP
Test point 1	Audio-navigation unit connector F (18P) No. 10 (RED)
Test point 2	Body ground

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

Does the voltage pulse between 0 V and 5 V as you rotate the tire?

YES

Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation, or Audio-Navigation Unit Removal and Installation (Display Audio) (2016-17) .

Substitute a known-good PCM - Refer to: PCM Removal and Installation (V6), or PCM Removal and Installation (L4) , and recheck.

Open wire check (VSP line)

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

Test condition	ON mode
	PCM connector A (51P): disconnected
Test circuit	VSP
Test point 1	Audio-navigation unit connector F (18P) No. 10 (RED) - Refer to: Audio-Navigation Unit Removal and Installation, or Audio-Navigation Unit Removal and Installation (Display Audio) (2016-17)
Test point 2	Body ground

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

Is there about 5.0 V?

YES

Repair an open in the wire between the audio-navigation unit and the PCM.

The VSP wire is not open. Go to step 7.

Shorted wire check (VSP line)

-1. Press the engine start/stop button to select the OFF mode.

- 2. Disconnect the following connector.

Audio-navigation unit connector F (18P) - Refer to: Audio-Navigation Unit Removal and Installation, or Audio-Navigation Unit Removal and Installation (Display Audio) (2016-17)

NOTE: Eject the disc before disconnecting the audio-navigation unit to prevent damaging the CD/DVD player's load mechanism.

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

Test condition	OFF mode
	PCM connector A (51P): disconnected
	Audio-navigation unit connector F (18P): disconnected
Test circuit	VSP
Test point 1	Audio-navigation unit connector F (18P) No. 10 (RED)
Test point 2	Body ground

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

Is there continuity?

YES

There is a short to body ground in the wire between the audio-navigation unit and the PCM.

Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation, or Audio-Navigation Unit Removal and Installation (Display Audio) (2016-17) .