Diagnostic Test: Navi System Link

WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, and 2006 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The point of interest (POI) being dialed must have a phone number listed with it.

Turn the ignition switch ON (II).
Make sure the cell phone is paired to the HFL (see PAIRING YOUR CELL PHONE (A ONE TIME PROCEDURE) ) and working properly (see GENERAL TROUBLESHOOTING INFORMATION ).
Is the cell phone paired?

YES - Go to step 3.

NO - Pair the cell phone to the HFL and retry.
Go into the Diagnostic Mode and use the "Navi System Link" diagnostic (see NAVI SYSTEM LINK ).
Is the "HFL" icon red or flickering?

YES - Go to step 4.

NO - Go to step 9.
Turn the ignition switch to LOCK (0).
Disconnect navigation unit connector G (5P) and the HandsFreeLink control unit connector (22P).
Check for continuity between body ground and navigation unit connector G (5P) terminals No. 1, No. 2, No. 3, and No. 4 individually.

Fig 1: Checking Continuity Between Body Ground And Navigation Unit Connector G (5P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Short to body ground in the wire(s) between HandsFreeLink control unit and navigation unit. Replace the affected shielded harness.

NO - Go to step 7.

Check for continuity between navigation unit connector G (5P) according to the table.

CONNECTOR TERMINALS REFERENCE

From terminal	To terminal
G1	G2, G3, G4, G5
G2	G3, G4, G5
G3	G4, G5
G4	G5

Fig 2: Identifying Navigation Unit Connector G (5P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity between any of the terminals?

YES - Short in the wire(s) between navigation unit and HandsFreeLink control unit. Replace the affected shielded harness.

NO - Go to step 8.

Check for continuity between navigation unit connector G (5P) and HandsFreeLink control unit 22P connector according to the table.

CONNECTOR TERMINALS REFERENCE

Navigation unit connector	HandsFreeLink control unit connector
G1	5
G2	15
G3	16
G4	17
G5	18

Fig 3: Checking Continuity Between Navigation Unit Connector G (5P) And Handsfreelink Control Unit 22P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 9.

NO - Open in the wire(s) between navigation unit and HandsFreeLink control unit. Replace the affected shielded harness.

Substitute a known-good HandsFreeLink control unit and retest.
Is the system OK?

YES - Replace the original HandsFreeLink control unit.

NO - Replace the navigation unit.