User manual

TROUBLE SHOOTING
OPEL / VAUXHALL
23
A0909032-1
APPENDIX A
Blink code read-out
To read out DTC:s using the blink code method, do like this.
1. Bridge pin A and B in the diagnostic connector.
2. Turn ignition on.
3. Count the flashes on the “Check engine” lamp.
4. Translate them using the list below.
5. To erase the fault codes, disconnect battery for >20 seconds.
Blink Code interpretation
The code read out always starts with “Code 12” repeated three times,
after this the fault codes are flashed. All codes are repeated three times,
the first digit is flashed with a space of 0.4 seconds, then there is a 1.2
second delay until the second digit is flashed. The delay between codes is
3.2 seconds. Each code is repeated three times.
Example, Code 22 (Throttle potentiometer voltage low):
3.2s 1.2s 0.4s 3.2s *3times =>
( 1 ) ( 2 ) = Code 12 (start code)
=> 3.2s 0.4s 1.2s 0.4s 3.2s *3times
First digit (2) “separator“ Second digit (2) = Code 22
Vehicle diagnostic connector (front view)
The sequence is ended by three times flashing of code 12.