Operation CHARM: Car repair manuals for everyone.

Minimum Equipment







Minimum Equipment

Information electronics control module 1 (J794)





1. Not assigned

2. Connection Block with Four Connectors

3. MOST bus

4. Not assigned

5. 4-pin connector (T4al) to front information display control head (J685)

6. 4-pin connector (T4ap) to external audio source connection (R199)

7. Not assigned

8. Not assigned


Unlisted connector terminals are not used.

2 - Connection Block With Four Connectors

A - 8-Pin Multi-Pin Connector (T8ah)





1. NF mute from preliminary setup for cell phone preparation

2. Voltage supply to Multimedia Control Head (E380)

3. Wake UP to Multimedia Control Head (E380)

4. Not assigned

5. Not assigned

6. Res MU to multimedia system control head (E380)

7. Ring-break diagnostic cable


B - 12-Pin Connector (T12x)





LHD vehicle

8 Microphone IN (+) for the microphone unit in front roof module (R164) ( left front microphone (R140) )
9 Microphone IN (-) for the microphone unit in front roof module (left front microphone)

RHD vehicle

8 Microphone IN (+) for the microphone unit in front roof module ( right front microphone (R141) )
9 Microphone IN (-) for the microphone unit in front roof module (right front microphone)

C - 12-Pin Connector (T12y)





All pins are connected to the external audio source connection (R199).

1. LF-In ground

2. Right LF-In

3. USB (+5V)

4. USB (ground)

5. Not assigned

6. Detect

7. Left LF-In

8. LF-In ground shielding

9. FBAS wire (+)

10. FBAS wire (-)

11. iPod data

12. iPod data


D - 8-Pin Connector (T16q)





10 Data from multimedia system control head (E380)
11 Data to the multimedia system control head
12 Terminal 31
14 Res BT from multimedia system control head
15 Terminal 30
16 Ground (GND) to multimedia system control head

3 - MOST Bus





1. IN

2. OUT


5 - 4-Pin Connector (T4al)





All pins are connected to the front information display control head (J685).

1. LVDS (-)

2. LIN

3. LVDS (+)

4. Ground


6 - 4-Pin Connector (T4ap)





All pins are connected to the external audio source connection (R199).

1. D (+)

2. iPod recognized

3. D (-)

4. Ground