With navigation

WARNING: This page is about a different car, the 2013 Honda Fit and 2012 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

Remove the driver's dashboard undercover DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION
Disconnect the 32P connector (A) from the HandsFreeLink control unit (B).

Fig 1: Identifying Handsfreelink Control Unit 32P Connector Terminals - With Navigation
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect the connector and socket terminals for a good pinfit to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 4.

Reconnect the connector and make these input tests at the connector under the test conditions listed.

If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to 5.

Cavity	Wire color	Test condition	Test: Desired result	Possible cause if desired result is not obtained
1	BLK	Under all conditions	Measure the voltage to body ground: There should be less than 0.2 V.	Poor ground (G501) An open or high resistance in the wire
17	PNK	Under all conditions	Measure the voltage to body ground: There should be battery voltage.	Blown No. B1 (15 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire
18	ORN	Ignition switch in ACCESSORY (I) or ON (II)	Measure the voltage to body ground: There should be battery voltage.	Blown No. B14 (7.5 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire

Disconnect the 32P connector again, and make this input test at the connector.

If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, the HandsFreeLink control unit must be faulty; replace it.

Cavity	Wire color	Test condition	Test: Desired result	Possible cause if desired result is not obtained
4 . 5	YEL . GRN	Disconnect the audio-navigation unit connector C (14P)	Check for continuity to ground: There should be no continuity.	Short to body ground in the wire(s)
4 . 5 . 21	YEL . GRN . GRY	Under all conditions	Check for continuity between No. 4 and No. 5, No. 4 and No. 21, and No. 5 and No. 21 terminals individually: There should be no continuity.	A short in the wires
4 . 5 . 21	YEL . GRN . GRY	Disconnect the audio-navigation unit connector C (14P)	Check for continuity between No. 4 terminal and audio-navigation unit connector C (14P) terminal No. 9, No. 5 terminal and audio-navigation unit connector C (14P) terminal No. 10, and No. 21 terminal and audio-navigation unit connector C (14P) terminal No. 3 individually: There should be continuity.	An open in the wire(s)