Volkswagen Passat 1995 Official Factory Repair Manual page 1646

Output Diagnostic Test Mode (DTM), initiating
Output Diagnostic Test Mode
Secondary Air Injection solenoid valve (N112)
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The Secondary Air Injection pump relay (J299)
must run until the next DTM component is
activated by pressing the
If the Secondary Air Injection pump motor does
not run:
- Press
button until the Output Diagnostic Test
Mode is completed
- Input 06 to select Function "End output" and
confirm with Q.
- Switch off ignition.
- Perform electrical check
step Fig. 33 or locate short circuit using wiring
diagram and correct as necessary.
If an open circuit cannot be located:
- Replace Secondary Air Injection pump relay
(J299) or Motronic Engine Control Module
(J220) as necessary.
Activate Secondary Air Injection solenoid valve
(N112):
- Press
button.
Display will appear as shown:
The Secondary Air Injection solenoid valve must
click.
If the relay does not click:
- Switch off ignition.
Page 8 of 9
01-39
button.
Page 01-52 , test
6/12/2004