Second Button Does Not Work

NOTE: Outputs K7 and K8 must be subjected to a current of not more than 250 mA. When the alarm is deactivated, the constant output signal on position k8 or position 1 will be switched off. In other words, deactivating the alarm shuts off the parking heater etc.





Check control module programing to see that FUNCTION 4 (visible acknowledgement button 2) is set to 5, 6, 7 or 8.

Sources of fault
Open-circuit in signal leads between connector and alarm control module.
Short-circuit to ground in signal leads between connector and alarm control module.
Short-circuit to supply in signal leads between connector and alarm control module.
Fault in remote control.
Fault in alarm control module.

Fault-tracing starts with S1.

S1 Check Signal Leads
Deactivate alarm.





Ignition off.





Disconnect the 2-pin connector.
Disconnect the 10-pin connector from control module.

Test A:
Connect an ohmmeter between 2-pin connector position 2 and 10-pin connector position K7. Ohmmeter should read approx. 0 ohm.





Test B:
Connect an ohmmeter between 2-pin connector position 1 and 10-pin connector position K8. Ohmmeter should read approx. 0 ohm.

If readings are OK:
Check button function in position 1 S2.

If any reading is incorrect:
Check respective lead between 2-pin connector and 10-pin connector for open-circuit as per WA3 See Other Fault-Tracing Test in Basic Alarm.Deal with fault or replace lead.

S2 Check Button Function In Position 1

Ignition off.
Replace 10-pin connector in control module.





Activate alarm.
Deactivate alarm.





Test A:
Connect an ohmmeter between 2-pin connector position 1 and ground. Ohmmeter should read infinite resistance.





Test B:
Reconnect ohmmeter between 2-pin connector position 1 and ground. Press button 2 on remote control. Ohmmeter should read approx. 0 ohm.





If readings are OK:
Check button function in position 2 S3.

If reading is incorrect in test A:
Check lead between 2-pin connector position 1 and 10-pin connector position K8 for short-circuit to ground as per WA4. Check Fault-Tracing in Remote Control in Basic Alarm.

If reading is incorrect in test B:
Check lead between 2-pin connector position 1 and 10-pin connector position k8 for short-circuit to supply as per WA5.
Check Fault-Tracing In Remote Control in Basic Alarm.


S3 Check Button Function In Position 2

Test A:
Ignition off.





Connect an ohmmeter between 2-pin connector position 2 and ground. Ohmmeter should read infinite resistance.





Test B:
Reconnect ohmmeter between 2-pin connector position 2 and ground. Keep button 2 on remote control pressed. Ohmmeter should read approx. 0 ohm.





If readings are OK:
Try another alarm control module after Fault-Tracing in Alarm Wiring Harness, here in Gurard Alarm I or II.

If reading is incorrect In test A:
Check lead between 2-pin connector position 2 and 10-pin connector position k7 for short-circuit to ground as per WA4. Deal with fault or replace lead.
Check Fault-Tracing in Remote Control of Basic Alarm.

If reading is incorrect In test B
Check lead between 2-pin connector position 2 and 10-pin connector position K7 for short-circuit to supply as per WA5. Deal with fault or replace lead.
Check Fault-Tracing in Remote Control of Basic Alarm.