SAAB WIS ONLINE

P1625

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE. Cruise control not working.

P1625


P-Bus Malfunction. No Bus Data From TC/ABS.


Fault symptoms


• CHECK ENGINE.

• Cruise control not working.


On-Board Diagnostics

Type of diagnosis:


- Continuous.


Enable criteria:


- Engine running.


Fault criteria:


- BUS communication between ECM and TCS/ABS is down for more than 0.13 s.


Dependents:


- None.


System reaction to a fault:


- Cruise control not working.


OK report:


- BUS communication between ECM and TCS/ABS is available for more than 4.2 s.


Fault handling: (See section Fault handling III, other emissions-related components and functions for more information)


- Type III.


Diagnostic help

The diagnosis concerns an electrical fault in bus communication between ECM and TCS/ABS.

Functions in the diagnostic tool related to the fault:


- Read value: Engine RPM (ECM), Engine RPM (TC/ABS)


Checking the wiring

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.