SAAB WIS ONLINE

ME9 / U0001 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp Engine does not start. Message in SID regarding TCM and TCS/ESP. All values in MIU are frozen. No communication with the engine management system. Cruise control not working.

  U0001 00


ECM Missing on Bus

Fault symptom

Malfunction Indicator Lamp

Engine does not start.

Message in SID regarding TCM and TCS/ESP.

All values in MIU are frozen.

No communication with the engine management system.

Cruise control not working.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.
Battery voltage must be between 10 - 18 V.

Dependent:

None

System reaction to a fault:

Cruise control blocked.
The control module deactivates the output to the A/C relay.

Fault handling:

Type III
(See section Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault on bus leads or in the component.
In order to read DTCs from ECM, communication with CIM is required. If the DTC is stored and read with the diagnostic tool, it indicates an intermittent bus lead fault.

Functions in the diagnostic tool related to the fault:

Read / Reset Bus Configuration
Read / Clear Bus Off Counter
Response Test