Audio-Navigation Unit Inputs and Outputs
Audio-Navigation unit Connector A (24P)
CONNECTOR TERMINALS REFERENCE CHART
| Cavity | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| A1 | BLK | MAIN GND | Ground for audio-navigation unit (G503) | 0 V | If open: No change to display. If short to ground: No change to display. |
| A2 | WHT | ILLUMI - (BULB) | Detects illumination control signal | With full dash lights brightness: 0 V | If open: When brightness = Auto, night mode for the display is inoperative when lights on. If short to ground: No change to display. |
| A3 | PNK | + B BACK UP | Continuous power source | Battery voltage | If open: Screen completely off (no backlight visible). If short to ground: Blows fuse No. B1 (15 A) in the under-dash fuse/relay box. |
| A4 | RED | ILLUMI + | Inputs 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: Blows fuse No. B29 (10 A) in under-dash fuse/relay box. |
| A5 | RED | RL PRE + | Outputs sound signal for left rear speaker | -- | -- |
| A6 | GRN | RL PRE- | Outputs sound signal for left rear speaker | -- | -- |
| A7 | Not used | Not used | -- | -- | -- |
| A8 | Not used | Not used | -- | -- | -- |
| A9 | LT GRN | RR PRE + | Outputs sound signal for right rear speaker | -- | -- |
| A10 | WHT | RR PRE- | Outputs sound signal for right rear speaker | -- | -- |
| A11 | WHT | REMOTE GND | Ground for audio remote switch | -- | -- |
| A12 | GRN | SCTY | Security signal form Multiplex integrated control unit (MICU) | -- | -- |
| A13 | BLU | K-LINE | Detects scan tool signal (serial data) | -- | -- |
| A14 | Not used | Not used | -- | -- | -- |
| A15 | YEL | FL PRE + | Outputs sound signal for driver's door speaker and left tweeter | -- | -- |
| A16 | PNK | FL PRE- | Outputs sound signal for driver's door speaker and left tweeter | -- | -- |
| A17 | Not used | Not used | -- | -- | -- |
| A18 | Not used | Not used | -- | -- | -- |
| A19 | GRN | FR PRE + | Outputs sound signal for passenger's door speaker and right tweeter | -- | -- |
| A20 | ORN | FR PRE- | Outputs sound signal for passenger's door speaker and right tweeter | -- | -- |
| A21 | WHT | SWD +B | Outputs voltage for stereo amplifier switching ON/OFF | -- | -- |
| A22 | PNK | REMOTE SW | Detects voltage for audio remote switch | -- | -- |
| A23 | BLU | VSP | Inputs vehicle speed pulse from ECM/PCM | Ignition switch ON (11): 0-5 V pulses, 2.5 V average (Depends on vehicle speed) | If open: No vehicle speed pulses. Diagnostic screen Car Status, VSP = 0. If short to ground: No vehicle speed pulses. Diagnostic screen Car Status, VSP = 0. |
| A24 | PUR | ACC | Power source for accessories | Ignition switch ACCESSORY (1): Battery voltage | If open: Display picture goes out (display back light still on). If short to ground: Blows fuse No. B14 (7.5 A) in the under-dash fuse/relay box. |
Audio-Navigation Unit Connector B (24P)
CONNECTOR TERMINALS REFERENCE CHART
| Cavity | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
|---|---|---|---|---|---|---|---|
| B1 | LT GRN | HFL COMM 4 | Communication signal for HFL | -- | Solid red HFL icon in System Links | ||
| B2 | LT BLU | HFL COMM 2 | Communication signal for HFL | -- | HFL icon in System Links changes between red and green | ||
| B3 | GRY(1) | HFL COMM SH | Shield for terminal No. 1, No. 2, No. 13 and No. 14 | -- | -- | ||
| B4 | RED | TELM SIG- | Inputs sound signal for HFL | -- | -- | ||
| B5 | BRN | HFL MUTE | HFL MUTE signal | -- | -- | ||
| B6 | Not used | Not used | -- | -- | -- | ||
| B7 | Not used | Not used | -- | -- | -- | ||
| B8 | Not used | Not used | -- | -- | -- | ||
| B9 | Not used | Not used | -- | -- | -- | ||
| B10 | WHT | AUX GND | Ground for AUX DET signal | -- | -- | ||
| B11 | GRY(1) | AUX SH GND | Shield for terminals No. 12, No. 23, and No. 24 | -- | -- | ||
| B12 | BRN | AUX S GND | Ground for AUX signal | -- | -- | ||
| B13 | PNK | HFL COMM 3 | Communication signal for HFL | -- | Solid red HFL icon in System Links | ||
| B14 | ORN | HFL COMM 1 | Communication signal for HFL | -- | HFL icon in System Links changes between red and green | ||
| B15 | Not used | Not used | -- | -- | -- | ||
| B16 | GRN | TELM SIG + | Inputs sound signal for HFL | -- | -- | ||
| B17 | BLU | HFL ICON | HFL ICON signal | -- | -- | ||
| B18 | Not used | Not used | -- | -- | -- | ||
| B19 | Not used | Not used | -- | -- | -- | ||
| B20 | Not used | Not used | -- | -- | -- | ||
| B21 | Not used | Not used | -- | -- | -- | ||
| B22 | YEL | AUX DET | AUX DET signal | -- | -- | ||
| B23 | ORN | AUX RCH | Inputs sound signal for AUX audio right channel | -- | -- | ||
| B24 | YEL | AUX LCH | Inputs sound signal for AUX audio left channel | -- | -- | ||
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Audio-Navigation Unit Connector C (8P)
CONNECTOR TERMINALS REFERENCE CHART
| Cavity | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| C1 | BLK | GND | Ground for audio-navigation unit (G503) | 0 V | If open: No effect on system. If short to ground: No effect on system. |
| C2 | Not used | Not used | -- | -- | -- |
| C3 | Not used | Not used | -- | -- | -- |
| C4 | PNK | + B BACK UP | Continuous power source | Battery voltage | If open: Display picture goes out (display back light still on).
NOTE:
System will reboot to enter code screen. If short to ground: Blows fuse No. B1 (15 A) in the under-dash fuse/relay box. |
| C5 | Not used | Not used | -- | -- | -- |
| C6 | Not used | Not used | -- | -- | -- |
| C7 | Not used | Not used | -- | -- | -- |
| C8 | LT GRN | BACK LT | Reverse signal of select lever (CVT model) or shift lever (M/T model) from Multiplex integrated Control unit (MICU) | In reverse: battery voltage, Otherwise: 0 V | If open: Navigation never sees the reverse signal. Diagnostic screen Car Status, Back = 0. If short to ground: Blows fuse No. B5 (10 A) in the under-dash fuse/relay box. |
Audio-Navigation Unit Connector D (12P)
CONNECTOR TERMINALS REFERENCE CHART
| Cavity | Wire Color | Terminal Name | Description | Voltage (about) | Symptom | ||
|---|---|---|---|---|---|---|---|
| D1 | YEL | AC-SO | Communication signal for climate control unit | 0-battery voltage pulses | If open: Voice control of HVAC does not work. If short to ground: Voice control of HVAC does not work. |
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| D2 | WHT | AC-SI | Communication signal for climate control unit | -- | If open/short: HVAC will not respond to navigation commands. | ||
| D3 | Not used | Not used | -- | -- | -- | ||
| D4 | Not used | Not used | -- | -- | -- | ||
| D5 | Not used | Not used | -- | -- | -- | ||
| D6 | ORN | HFL-NAVI GUIDE | Detects voltage for HFL-voice control switch | No button pressed: 2.5 V TALK button pressed: 2.2 V BACK button pressed: 1.5 V | If open: Steering wheel navigation TALK, and navigation BACK buttons do not work. If short to ground: Steering wheel navigation TALK, and navigation BACK buttons do not work. |
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| D7 | GRY | AC-CLK | Check signal for climate control unit | -- | If open/short: HVAC will not respond to navigation commands. | ||
| D8 | Not used | Not used | -- | -- | -- | ||
| D9 | Not used | Not used | -- | -- | -- | ||
| D10 | GRY(1) | MIC SH | Shield for terminals No. 11 and No. 12 | 0 V | If open: No effect on voice control. If short to ground: No effect on voice control. |
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| D11 | RED | MIC SIG + | Inputs sound signal for microphone | 4-5 V (Navigation TALK button pressed) | If open/short: Mic icon shown as red in System Links. | ||
| D12 | GRN | MIC SIG- | Inputs sound signal for microphone | 0 V | If open: Mic icon shown as red in System Links If short to ground: No effect on voice control. |
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Audio-Navigation Unit Connector H (2P)
CONNECTOR TERMINALS REFERENCE CHART
| Cavity | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| H1 | -- | SIG (GPS) | GPS signal (5 V in, GPS signal out) | 5V | If open: GPS icon on screen is not shown, System Links screen GPS Ant. shown as red. If short to body ground: Same as open. |
| H2 | -- | SH (GPS) | Shield for terminal No. 1 | 0 V | If open: GPS icon on screen is not shown, System Links screen GPS Ant. shown as red. If short to body ground: No effect on system. |