Manual Controls Circuit Troubleshooting

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect navigation or multi-information display unit connector A (5P).
Disconnect climate control unit connector A (16P).

Check for continuity between the following terminals of climate control unit connector A (16P) and navigation or multi-information display unit connector A (5P).

TERMINALS REFERENCE

16P	5P
No. 8	No. 4
No. 15	No. 3
No. 16	No. 2

Fig 1: Checking For Continuity Between Following Terminals Of Climate Control Unit Connector A And Navigation

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 4.
NO - Repair any open in the wire(s) between the climate control unit and the navigation or multi-information display unit.

Check for continuity between the body ground and climate control unit connector A (16P) terminals No. 8, 15, and 16 individually.

Fig 2: Checking For Continuity Between Body Ground And Climate Control Unit Connector A Terminals No. 8, 15, And 16
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Repair any short to body ground in the wire(s) between the climate control unit and the navigation or multi-information display unit.
2. NO - Check for loose wires or poor connections at climate control unit connector A (16P) and at navigation or multi-information display unit connector A (5P). If the connections are good, substitute a known-good climate control unit, and recheck. If the problem still exists, replace the navigation or multi-information display unit.