Bosch SAIC VDI III - Troubleshooting; VDI III Error LED Lights After Power On; VDI III Does Not Switch On; Vehicle LED Flashes Red

1 689 989 4582020-01-01 | Robert Bosch GmbH
Troubleshooting | VDI III | 17 en
6. Troubleshooting
This section contains descriptions of measures
that can be taken if VDI III does not appear to
work properly. If the error is not eliminated by
the indicated remedy, it is necessary to contact
service.
6.1 VDI III error LED lights after
power on
Recommendations
1. Switch off VDI III, and check if the issue
persists when the power supply is switched
on again.
2. Connect VDI III to a computer by USB, and
perform the recovery procedure.
6.2 VDI III does not switch on
VDI III should switch on as soon as external
power is applied. If VDI III does not switch on,
check the cable connections first. Try supplying
power to VDI III from the other of the two power
sources – DLC connection or USB port.
Recommendations
¶ Make sure the cables are securely attached
to VDI III and the contacts are clean.
$ If the diagnostic device is connected to
the vehicle's DLC connection, try sup
-
plying power by the USB port.
$ If the diagnostic device is connected to
the USB port, try supplying power by the
DLC connection.
6.3 "Vehicle" LED flashes red
If VDI III does not detect 12V on pin 16 of the
diagnostic connection cable, VDI III will inform
the user by automatically turning on and flas
-
hing the vehicle LED red. This condition might
be seen if VDI III is only powered by a 5-V USB
connection or if the diagnostic connection
cable has accidentally been displaced from
the vehicle data link connector (DLC) and is
powered by the backup capacitor. When VDI III
detects 12V on pin 16, the vehicle LED will
stop flashing red.
Recommendations
1. Ensure that 12V are applied to pin 16 of the
diagnostic connection cable.
2. Ensure the ground connection on J1962 pin
5 is good.
6.4 VDI III speaker beeps
If VDI III is performing diagnostic services for
the computer and does not detect 12V on pin
16 of the diagnostic connection cable, VDI III
will inform the user of the loss of power by
beeping the speaker. VDI III will continue to
beep until the backup capacitor is drained.
When VDI III detects 12V on pin 16, the spea
-
ker will stop beeping.
Recommendations
¶ Ensure that 12V are applied to pin 16 of the
diagnostic connection cable during diagno
-
stic sessions.