Measure the voltage between ECM and chassis ground.
Connector & terminal
(B136) No. 21 (+) - Chassis ground (- )
Is the voltage less than 0.2 V?
YES. Go to CHECK HARNESS BETWEEN ECM & COUPLING CONNECTOR IN REAR WIRING HARNESS .
NO. Go to next step.
Home/Saab/9-2X/Saab 9-2X I (2004-2006)/Repair manual/Testing & Diagnostics/Check Input Signal for ECM.
Contents
Wiring diagrams Section: Testing & Diagnostics All sections- Abbreviations
- Airbag
- Anti-Lock/traction Control
- Automatic HVAC System
- Automatic Trans
- Automatic Transmission
- Automatic Transmission: Removal & Installation
- Axle Shafts
- Basic Trouble Shooting
- Brakes
- Cabin Air Filter
- Charging System
- Check Lists
- Clutches Manual & Hydraulic
- Cooling System (Mechanical)
- Cruise Control Systems
- Diagnostic Connector Locations
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- DTC Index
- Electrical Component Locations
- Emission Applications
- Engine
- Engine Control Systems
- Engine Performance
- Entertainment Systems
- Exhaust
- Exterior Body Panels
- Exterior Lights
- Exterior/interior Trim
- Fuel System
- Fuses & Circuit Breakers
- Gauges & Instrument Panels
- Horns
- Identification
- Ignition System
- Lubrication System
- Manual & Power Steering
- Manual Trans
- Manual Transmission and Differential: Overhaul
- Mechanical
- Mechanical - Hydraulic
- Mechanical, 2.5L
- Mechanical, 2.5L: Removal & Installation
- Metric Conversions
- Mode 6
- Parking Brake System
- Passive Restraints
- Reset Procedures
- Seats
- Specifications
- Steering
- Sun Roof/t-Top/convertible Top
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Timing Belt
- Traction Control Disable
- Transfer Case
- Transmission
- Wheel & Tire System
- Windows
- Wiper/washer Systems