HFL Switch Test

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service.

Remove the driver's airbag (see DRIVER'S AIRBAG REPLACEMENT ).
Disconnect the 20P connector (A).

Fig 1: Identifying 20P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Measure the resistance between the terminals No. 8 and No. 19 in each switch position according to the table.

HFL-NAVIGATION VOICE CONTROL SWITCH (WITH NAVIGATION)

Position	Resistance
No buttons pressed	About 10 kΩ
PICK-UP button pressed	About 47 Ω
HANG-UP button pressed	About 220 Ω

HFL SWITCH (WITHOUT NAVIGATION)

Position	Resistance
No buttons pressed	About 1 kΩ
HFL TALK button pressed	About 46 Ω
HFL BACK button pressed	About 185 Ω

If the resistance is not as specified, replace the switch.
- With navigation (see VOICE CONTROL SWITCH REPLACEMENT ).
- Without navigation (see HFL SWITCH REPLACEMENT ).