If trip meter resets to zero when vehicle is started, go to next step. If trip meter does not reset to zero when vehicle is started, use Tech 1 scan tool to activate odometer. If all segments illuminate, go to step 5 . If all segments do not illuminate, check bulb behind odometer display in Main Instrument Unit (MIU). Replace as necessary. If bulb is okay, replace odometer/trip meter display unit. After repair, go to step 5 .
Connect test light between upper pin in fuse holder No. 35 and ground. Fuse is located in fuse panel, at end of instrument panel. If test light comes on, go to next step. If test light does not come on, repair wiring to fuse. After repair, go to step 5 .
Connect test light between lower pin in fuse holder No. 35 and ground. If test light comes on, go to next step. If test light does not come on, replace fuse. After repair, go to step 5 .
Disconnect Main Instrument Unit (MIU) 12-pin connector located at rear of instrument cluster. See Fig 1 . Connect test light between 12-pin connector terminal No. 7 (Red wire) and ground. If test light comes on, go to next step. If test light does not come on, repair open circuit in Red wire between fuse No. 35 and 12-pin connector terminal No. 7. After repair, go to next step.
Clear DTCs. Perform a functional test of odometer display. If odometer functions, system is okay. If odometer does not function, replace MIU ECU. See ELECTRONIC CONTROL UNIT (ECU) under REMOVAL & INSTALLATION.

Fig 1: Identifying MIU 12-Pin Connector

Courtesy of SAAB-SCANIA OF AMERICA, INC.

When to See a Mechanic

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

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Odometer/Trip Meter