Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Navigation Unit Inputs and Outputs for Connector C (8P)
2008 Acura MDXSECTION Navigation Unit Inputs and Outputs for Connector C (8P)
Navigation Unit Connector C (8P)
NAVIGATION UNIT CONNECTOR C (8P) TERMINAL REFERENCE
| Terminal Number | Wire Color | Terminal Name | Description | Voltage (about) | Symptom |
|---|---|---|---|---|---|
| 1 | WHT | +B (+B Power source) | 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. 5 (10 A) in the under-dash fuse/relay box.
|
| 2 | PUR | ACC (Accessory) | Power source for accessories | Battery voltage at ACC (1) | If open: Display picture goes out (display back light still on). If short to ground: Blows fuse No. 32 (10 A) in the under-dash fuse/relay box. |
| 4 | BLK | GND (Ground) (G605) | Ground for navigation unit | 0 V | If open: No effect on system. If short to ground: No effect on system. |
| 5 | BRN | BACK LT (Back light or reverse signal) | Reverse signal of select lever from "Multiplex Integrated Control Unit" (A/T) or backup light switch (M/T) | 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. 21 (7.5 A) in the driver's under-dash fuse/relay box. |
| 6 | BLU | VSP (Vehicle speed pulse) | Vehicle speed pulse signal from PCM | 0-5 V pulses 2.5 V average (depends 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. |
| 7 | GRY | 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 key ON (I) and (II). |
| 8 | YEL | DIAG--(Diagnostic negative) | Ground for service check signal | 0 V | If open: The system will not go into diagnostic mode when using the SCS jumper. If short to ground: No effect on system. |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.