SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSAAB20109-5REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTAUDIO SYSTEM WITH NAVIGATIONFAULT DIAGNOSIS, SYMPTOMSONSTAR BUTTON MALFUNCTIONCIRCUIT/SYSTEM TESTING
2010 Saab 9-5

Circuit/System Testing

2010 Saab 9-5SECTION Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the INSIDE REARVIEW MIRROR .
  2. Test for less than 5 Ξ© between the mirror ground circuit terminal 5 and ground.
  3. If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, test for less than 1 V between the S51 Telematics Button Assembly signal circuit terminal 3 and ground.
  5. If the value is greater than the specified range, check if there is a short-circuit to voltage in the S51 signal circuit of the Telematics keypad. If the circuit test result is normal, replace the K73 telematics communication interface control module.
  6. Ignition OFF, test for 450-850 kΞ© between the S51 Telematics Button Assembly signal circuit terminal 3 and ground.
  7. If the value is less than the specified range, check if there is a short-circuit to ground in the S51 signal circuit of the Telematics keypad. If the circuit test result is normal, replace the K73 telematics communication interface control module.
  8. If the value is greater than the specified range, check if there is an open circuit/high resistance in the S51 signal circuit of the Telematics keypad. If the circuit test result is normal, replace the K73 telematics communication interface control module.
  9. Ignition ON, test for 9.5-10.5 V between the S51 Telematics Button Assembly supply voltage circuit terminal 4 and ground.
  10. If less than the specified range, test the supply voltage circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the K73 telematics communication interface control module.
  11. If greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the K73 telematics communication interface control module.
  12. If all circuits test normal, test or replace the button assembly.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.