SAAB WIS ONLINE

P0531

Read the instructions below then start the fault diagnostic procedure.

Symptom: No cooling.

P0531


A/C Pressure Sensor, Short to B+

Fault symptoms


• No cooling.


On-Board Diagnostics

Type of diagnosis:


- Continuous.


Enable criteria:


- Engine running.


Fault criteria:


- The voltage on the input is greater than 4.9 V for more than 0.6 s.


System reaction to a fault:


- The control module uses a substitute value of 101 kPa.

- The control module switches of the output to the A/C relay. Fault criteria NOT fulfilled for 0.6 s.


OK report:

Check the wiring

A fault in the control module's female connector can generate a DTC. Check the contact for oxidation, dislodge pins and pin clamping force.

Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this. Check switches, connectors and crimp connections for oxidation, dislodged pins and pin clamping force.

Diagnostic help

Diagnostic tool functions related to this fault are:


• Read value:

• A/C Pressure


For more information, see also:

- "Read Values" menu for a description of read values.

- "Activate" menu for a description of applications.