SAAB WIS ONLINE

P0653

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Idling set to 1400 rpm. Loss of performance. Cruise control out of order.

P0653


Voltage Supply Group 2, Open/Short to B+

Fault symptoms


• CHECK ENGINE lamp on.

• Idling set to 1400 rpm.

• Loss of performance.

• Cruise control out of order.


On-Board Diagnostics

Type of diagnosis:


- Continuous.


Enable criteria:


- Turn Ignition On.


Fault criteria:


- Control module output shorted to B+/open circuit.


System reaction to a fault:


- Cruise control is switched off.

- Idling set to 1400 rpm.


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

Diagnosis checks the power supply to:


• Fuel pressure sensor, fuel rail.

• Accelerator pedal position sensor

• Intake air sensor


For more information, see also:

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

- "Activate" menu for a description of applications.