Test Point 38

Test point 38
Signal converter faulty

Fault code 39
1. Check the power supply for the signal converter:
- Disconnect the plug on the signal converter.
- Voltmeter at plug housing pin 4 (negative) and pin 5 (positive).
Ignition key inserted.
Display: Battery voltage.

2. Check the control lead for the signal converter (pin 6) to the alarm control module plug I pin 4 for continuity, short to B+ and short to ground.
3. Check the status lead for the signal converter (pin 7) to the alarm control module plug I pin 12 for continuity, short to B+ and short to ground.
4. Check the data lead for the signal converter (pin 8) to the alarm control module plug I pin 3 for continuity, short to B+ and short to ground.