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Navigation Unit Inputs and Outputs for Connector B (14P)

WARNING: This page is about a different car, the 2008 Honda Pilot, 2007 Honda Pilot, and 2006 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Navigation Unit Inputs And Outputs For Connector B (14P) Connector Terminals
G05594868Courtesy of AMERICAN HONDA MOTOR CO., INC.
TERMINALS REFERENCE

Terminal Number Wire Color Terminal Name Description Voltage (about) Symptom
5 LT GRN RG L (+) (Route guidance voice left positive) Left audio signal of voice guidance, and Voice Recognition (VR) prompts Audio signal 0.004-0.04 V If open: If voice activated, radio speakers buzz, if voice off, no effect.
If short to ground: If voice activated, radio speakers buzz; if voice off, no effect
6 BLU MIC SIG (+) (Mic signal positive) Microphone output signal positive 4-5 V (with TALK button pressed) If open: No microphone signal shown in diagnostic screens: "Navi System Link" NG shown in RED and Functional Setup "Mic Level".
If short to ground: No microphone signal shown in diagnostic screens: "Navi System Link" NG shown in RED and Functional Setup "Mic Level".
10 ORN NAVI REMOTE SWITCH (Steering switches) Steering switch output 3.7 V (TALK button pressed)
2.5 V (BACK button pressed)
4.3 V (No buttons pressed)
If open: Steering wheel TALK and BACK buttons do not work or respond in the Navi System links test. If short to ground Steering wheel TALK and BACK buttons do not work or respond in the Navi System links test.
11 LT BLU(1) RG SHIELD (Shield route guidance) Shield for terminal No 5,12 0 V If open: No effect on voice output.
If short to ground: No effect on voice output.
12 PUR RG GND (Ground routs guidance) Ground for voice guidance, and Voice Recognition (VR) prompts 0 V If open: No effect on voice output.
If short to ground: No effect on voice output.
13 LT BLU(1) MIC SHIELD (Shield mic) Shield for terminal No. 6, 14 0 V If open: No effect on voice recognition.
If short to ground: No effect on voice recognition.
14 RED GND MIC (Ground mic) Ground for microphone signal 0 V If open: No microphone signal shown in diagnostics: "Navi System Link" NG shown in RED and Functional Setup "Mic Level".
If short to ground: No effect on voice recognition.
(1) The shielded wires have a heat-shrunk tube insulating the outside of the wire. The color of the insulating tube, typically black or dark gray, may not match the color of the wire listed on the schematic.