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Manual Switch (Navigation System Display) Troubleshooting

Disconnect navigation system 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 system display unit connector A (5P).

CLIMATE CONTROL UNIT CONNECTOR-TO-NAVIGATION SYSTEM DISPLAY UNIT CONNECTOR CONTINUITY CHART

Climate control Unit Connector A (16P) Terminal	Navigation System Display Unit Connector A (5P) Terminal
No. 14	No. 3
No. 15	No. 2
No. 16	No. 4

Fig 1: Checking Continuity Between Following Terminals Of Climate Control Unit Connector A (16P) & Navigation System Display Unit Connector A (5P)

G01520135

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 display unit.

Check for continuity between the No. 14, 15 and 16 terminals of climate control unit connector A (16P) and the body ground individually.

Fig 2: Checking Continuity Between No. 14, 15 & 16 Terminals Of Climate Control Unit Connector A (16P) & Body Ground Individually
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 system display unit.
2. NO - Check for loose wires or poor connections at climate control unit connector A (16P) and at navigation system 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 system display unit.