OBD Diagnostic Cable
The Diagnostic Cable is used to connect the diagnostic head to a vehicle via the OBD II diagnostic connector (upper right).
Scheme 3
Diagnostic Head
The Diagnostic Head enables operation of the diagnostic interface via either radio or cable communication.
Scheme 4
| LED 1 Green | LED 2 Yellow | LED 3 Red | Function | Remarks |
|---|---|---|---|---|
| ON | ON | ON | Initialization | Recorder Button Green |
| ON | OFF | OFF | Power Up | |
| ON | Flashing | OFF | Standby | |
| ON | ON | OFF | Connected | |
| Flashing | ON | OFF | Self Test or Update | |
| Flashing | Excess Temperature | Fault |
DIAGNOSTIC HEAD CHART
Scheme 5
Diagnosing with the GT1 (hardwired to the diagnostic head)
For hardwire connection three cables must be used
- LAN control panel adapter UNCROSSED
- LAN control panel adapter CROSSED
- LAN Diagnostic head cable
The three cables MUST be connected in the particular order shown below.
Scheme 6
| Symptom | Possible Causes | Remedy |
|---|---|---|
| No connection possible (LED 1 on diagnostic head is dark). | No Power supply of the diagnostic head via vehicle electrical systems. | First check the plug-in contact on the BMW or OBD diagnostic cable and its connection to the vehicle. Switch on the ignition. If the LED still does not light up, send a Fault Report Fax. |
| Connection to the diagnostic head not possible or faulty (LED 2 flashes yellow); no diagnostic head is recognized. The diagnostic head cannot be connected. | Interference due to excessive distance from the vehicle; in the case of radio link, may also be due to external radio sources or absorption. | Check the correct connection of the cables at the diagnostic head. Change the location of the diagnostic head and, if necessary, of the control panel. If this does not remedy the fault, change the connection type. If there is still no connection, send a Fault Report Fax. |
| Diagnostic head software defective. | Perform a reinstallation in accordance with Section 7.7 | |
| Incorrect IP address when the diagnostic head was changed. | Check the IP address in the "Administration, Network configuration" window. | |
| Radio card in the diagnostic head defective. | If possible, use the second diagnostic head to check the radio link. If the connection can be established, the card in the first diagnostic head is defective. Send a Fault Report Fax. | |
| Radio card in the control panel is defective. | If possible, use the second diagnostic head to check the radio link. If no connection can be established with this head either, the card in the control panel might be defective. Using a suitable tool (such as a screwdriver), pry the cover off the radio card slot in the left handle of the control panel ( see scheme 71); you will then se one green and one yellow LED on the radio board. If the green LED is lit, the radio board is OK. If the yellow LED is flashing rapidly, data transmission is being formed correctly. If the LEDs are in any other state, send a Fault Report Fax. | |
| LED 3 Flashing Red | Interior temperature of the diagnostic head is too high. | Terminate the diagnosis. Terminate the connection and allow the diagnostic head to cool adequately before using it again. |
| LED1 flashing rapidly | General fault in the diagnostic head. | Send a Fault Report Fax. |
| "Recorder" button on the back lights up in green. | Only while booting. | Not a Fault. This button has not function at this time. |
DIAGNOSTIC HEAD - TROUBLESHOOTING CHART