Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Connectors, Information Electronics Control Module 1, from June 2009







Information Electronics Control Module 1, from June 2009

Information electronics control module 1 (J794)





1. Connection block with four multi-pin connectors

2. MOST Bus

3. Not used

4. Gray 4-pin connector (T4am) to the front information display control head (J685)

5. 4-pin connector (T4ao) to external audio source connection (R199)

6. Not used

7. GPS connection from roof antenna (R216)

8. Not used

Unlisted connector terminals are not assigned.

A - Brown 8-pin connector (T8y)





1. LF mute, not used

2. Voltage supply to multimedia control head (E380)

3. Wake UP to multimedia control head

4. Not used

5. Not used

6. Res MU to multimedia control head

7. Ring-break diagnostic wire

B - Blue 12-pin connector (T12ac)





Left-hand drive vehicles

2 Microphone input (+) from microphone unit in front roof module (R164) (right front microphone (R141))
3 Microphone input (-) from microphone unit in front roof module (right front microphone)
5 FBAS wire (-) from rear view camera system control module (J772)
8 Microphone input (+) from microphone unit in front roof module (left front microphone (R140))
9 Microphone input (-) from microphone unit in front roof module (left front microphone)
11 FBAS wire (+) from rear view camera system control module

C - Green 12-pin connector (T12ad)





All pins are connected to the external audio source connection.

1. LF-In ground

2. Right LF-In

3. USB (+5V)

4. USB (ground)

5. Not used

6. Detect

7. Left LF-In

8. LF-In ground shielding

9. FBAS wire (+)

10. FBAS wire (-)

11. iPod data

12. iPod data

D - Black 8-pin connector (T8z)





10 Data to multimedia control head
11 Data to multimedia control head
12 Terminal 31
14 Res BT from multimedia control head
15 Terminal 30
16 Ground to multimedia control head

2 - MOST Bus





1. Input

2. Output

4 - Gray 4-pin connector (T4am)





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

1. LVDS (-)

2. LIN

3. LVDS (+)

4. Ground

5 - 4-pin connector (T4ao)





All pins are connected to the external audio source connection.

1. D (+)

2. iPod recognized

3. D (-)

4. Ground