Checking the wiring and component: Notes
- Ignition off.
Check the intake air temperature (IAT) sensor resistance between terminals #1 and #2 on the boost pressure sensor.
NOTE:The intake air temperature (IAT) sensor may be defective if there gas been a short-circuit to supply voltage in the signal cable. Check this before replacing the sensor.
Check the signal cable between control module terminal #A5 (#A5) and boost pressure sensor terminal #2. Check for a short-circuit to supply voltage. Check for an open-circuit.
HINT: With the ignition on and the boost pressure sensor connector disconnected, the voltage between terminal #2 and ground must be approximately 5 V.
Check the ground lead between control module terminal #A60 (#A60) and boost pressure sensor terminal #1. Check for an open-circuit.
If no errors are found and the fault is permanent, replace the intake air temperature (IAT) sensor.
Remedy as necessary.
Other information:
- To connect the breakout box / access the control module, see Connecting the breakout box
- To access or replace the intake air temperature (IAT) sensor, see Temperature and pressure sensor, replacing
- For resistance values, see Component specifications
- For information about signals on 5 cylinder engines, see Signal specification
- For information about signals on 6 cylinder engines:
- For 6 cylinder engines -2001, see Signal specification
- For 6 cylinder engines 2002-, see Signal specification
- For 6 cylinder engines -2004, see Signal specification
- For 6 cylinder engines 2005-, see Signal specification .
- See Contents .
Courtesy of VOLVO CARS OF NORTH AMERICA.
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Refer to Verification