Operation CHARM: Car repair manuals for everyone.
Home >> Saab >> 2000 >> 9-3 Convertible (9400) L4-2.0L Turbo (B205) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> No Communication With Auxiliary Heater >> Checking That the DAH Control Module Is Active
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Checking That the DAH Control Module Is Active




Checking That The DAH Control Module Is Active







- Connect a jumper lead between pin 1(30) and pin 2(87) of the relay holder.
- Auxiliary heater should start

Is the function correct?

NO - Checking the DAH Control Module Power Supply and Ground

YES - Checking the Diagnostic Tool
pro multis · About Operation CHARM