Navigation Unit Inputs and Outputs
WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
AUDIO-NAVIGATION UNIT CONNECTOR A (24P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| 4 | WHT | SCTY2 | Security signal from MICU | 0V | If open The security system sets, and does not trip when screen is removed If short to ground The security system sets, and does not trip when screen is removed |
| 12 | BLK | GND (Ground) (G502) | Ground for audio-navigation unit | 0V | If open No effect on system If short to ground No effect on system |
| 13 | GRY | NAVI ILL+ (Illumination positive) | Parking light on signal | Lights on battery voltage, Lights off 0 V | If open When brightness=Auto, night mode for the display is inoperative when lights on If short to ground No effect on system |
| 14 | PUR | ACC (Accessory) | Power source for accessories | Battery voltage at ACC mode | If open Display picture goes out (display back light still on) If short to ground Blows fuse No 18 (7 5 A) in the driver's under-dash fuse/relay box |
| 15 | BLU | VSP (Vehicle speed pulse) | Vehicle speed pulse signal from PCM | 0-5 V pulses average 2 5V (Depending on bus traffic) | If open No vehicle speed pulses Diagnostic screen Car Status, VSP Navi=0 If short to ground No vehicle speed pulses Diagnostic screen Car Status, VSP Navi=0 |
| 24 | WHT | +B (+B Power source) | Continuous power source | Battery voltage | If open Display picture goes out (display back light still on)
NOTE:
System reboots to enter code screen If short to ground Blows fuse No 15 (10 A) in the under-hood fuse/relay box
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AUDIO-NAVIGATION UNIT CONNECTOR D (20P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| 4 | ORN | NAVI-SI (Air conditioner serial in) | Communication signal for climate control unit | -- | If open/short HVAC will not respond to navigation commands |
| 5 | PUR | NAVI-SO (Air conditioner serial out) | Communication signal for climate control unit | -- | If open or short HVAC will not respond to navigation commands |
| 14 | BRN | NAVI-CLK (Air conditioner clock) | Check signal for climate control unit | -- | If open or short HVAC will not respond to navigation commands |
AUDIO-NAVIGATION UNIT CONNECTOR G (16P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
|---|---|---|---|---|---|---|---|
| 1 | BLK | RG L GND (Route guidance ground) | 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 |
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| 2 | WHT | RGL+ (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 |
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| 4 | BRN | BACK LT-(Back light or reverse signal) | Reverse signal of select lever from reverse relay | In reverse, battery voltage Otherwise 0 V | If open Navigation never sees reverse Diagnostic screen Car Status, Back=0 If short to ground Blows fuse No 5 (7 5 A) in the driver's under-dash fuse/relay box |
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| 5 | YEL | B SIG (Blue signal) | Blue color signal | 0 2 VAC average in RGB color diagnostic mode | If open Blue color missing (see RGB ) If short to ground Blue color missing (see RGB ) |
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| 6 | RED | G SIG (Green signal) | Green color signal | 0 7 VAC average in RGB color diagnostic mode | If open Green color missing (see RGB ) If short to ground Green color missing (see RGB ) |
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| 7 | WHT | R SIG (Red signal) | Red color signal | 0 7 V AC average | If open Red color missing (see RGB ) If short to ground Red color missing (see RGB ) |
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| 8 | GRY(1) | SH SIG (Shield signal) | Shield for terminals No 5, 6, 7, 15, 16 | 0V | If open No change to display If short to ground No change to display |
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| 13 | GRY(1) | RG LSH (Route guidance shield) | Shield for terminals No 1, 2 | 0V | If open No effect on voice output If short to ground No effect on voice output |
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| 15 | BLU | YS | Overlay control signal | 1 0 VAC average | If open No change to display If short to around No change to display |
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| 16 | BRN | C SIG (Composite signal) | Composite video (vertical/horizontal) Synchronizing signal | 0 2 V AC average in RGB color diagnostic mode | If open Picture rolls horizontally, colors still visible If short to ground Picture rolls horizontally, colors still visible |
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The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram |
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AUDIO-NAVIGATION UNIT CONNECTOR H (28P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | YEL | DIAG-(Diagnostic negative) | Ground for service check signal | 0V | If open The system will not go into diagnostic mode when using the SCS jumper If short to ground No effect on system |
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| 9 | BLK(2) WHT(3) |
NAVI COMM4 (HFL communication 4) | Communication signal for HFL | 4 5 V DC | Solid red HFL icon in Navi System Link Phone icon in the Route To screen is grayed out |
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| 10 | RED(2) GRN(3) | NAVI COMM2 (HFL communication 2) | Communication signal for HFL | 4 5 V DC | HFL icon in Navi System Link changes between red and green Phone icon in the Route To screen is grayed out |
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| 12 | WHT | F-CAN HI (F-CAN high) | F-CAN bus communication | Pulses 2 5-6 V average 2 5V (depends on F-CAN communication traffic) | If open
If short to ground Same diagnostic conditions as when open, and also sets the following DTCs
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| 13 | GRY(1) | JOG SH (Interface dial Shield jog) | Shield for terminal No 26 | -- | -- | ||||||
| 14 | GRY(1) | MIC SIG SH (HFL mic signal shield) | Shield for terminals No 27, 28 | 0 V | If open No effect on voice control If short to ground No effect on voice control |
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The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram
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AUDIO-NAVIGATION UNIT CONNECTOR H (28P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18 | RED | DIAG+ (Diagnostic positive) | Service check signal for navigation system | 5-6 V | If open No effect on system If short to ground System goes into diagnostic mode at ACC or ON mode |
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| 22 | GRN(2) RED(3) | NAVI COMM3 (HFL communication 3) | Communication signal for HFL | 5 V DC | Solid red HFL icon in Navi System Link Phone icon in the Route To screen is grayed out |
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| 23 | WHT (2) BLK(3) | NAVI COMM1 (HFL communication 1) | Communication signal for HFL | 5 V DC | HFL icon in Navi System Link changes between red and green Phone icon in the Route To screen is grayed out |
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| 24 | GRY(1) | NAVI COMM SH (shield HFL) | Shield for terminals No 9, 10, 22, 23 | 0V | -- | ||||||
| 25 | BLK | F-CAN LO (F-CAN low) | F-CAN bus communication | Pulses 2 5-6 V 2 5V average (depends on bus traffic) | If open
If short to ground Same diagnostic conditions as when open, and also sets the following DTCs
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| 26 | BLU | JOG (Interface dial Jog) | Interface dial operation signal | 0-5 V pulses | If open You cannot operate navigation system If short to ground You cannot operate navigation system |
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| 27 | RED | MIC SIG-(HFL mic signal negative) | Ground for microphone signal | 0V | If open microphone signal shown as red in diagnostics System Links and Functional Setup Mic Level If short to ground No effect on voice recognition |
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| 28 | GRN | MIC SIG+ (HFL mic signal positive) | Microphone output signal positive | 4-5 V (Navigation TALK button pressed) | If open microphone signal shown as red in diagnostic screens System Links and Functional Setup Mic Level If short to ground microphone signal shown as red in diagnostic screens System Links and Functional Setup Mic Level |
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The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram
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AUDIO-NAVIGATION UNIT CONNECTOR J (2P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| 1 | -- | GPS SIG | GPS signal | 5 V | If open GPS icon on screen is white, system links screen ANT shows NG If short to body ground Same as open |
| 2 | -- | GPS SH | Ground for GPS signal | 0 V | If open GPS icon on screen is white, system links screen ANT shows NG If short to body ground No effect on system |