Checking wiring and connectors

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Check the connectors for the control module, system relay and mass air flow (MAF) sensor. Check the connections visually according to Inspect terminals visually . Check for intermittent contact resistance and oxidation according to Contact resistance and oxidation
Check the intake system for air leakage according to intake system/leak test
Remedy as necessary.
Other information:
- To access the engine control module (ECM), see Engine control module (ECM), replacing
- To connect the breakout box, see Connecting the breakout box. EMS 2000
- For information about signals, see Signal specification
- To replace the mass air flow (MAF) sensor, see Replacing the mass air flow (MAF) sensor .
Fig 2: Identifying Atmospheric Pressure Sensor Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

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