T8 / P0600 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: 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.
T8 was Missing on Bus
Fault symptom
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:
Enable criteria:
| Ignition on for at least 3 s. |
| Battery voltage must be between 6 - 18 V. |
Fault criteria:
| No communication with CIM and TCS/ESP for 1.4 s. |
Dependent:
System reaction to a fault:
| The control module uses substitute value +20°C for outside temperature. |
| The control module deactivates the output to the A/C relay. |
Fault handling:
| (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
In order to read DTC from Trionic 8, communication with CIM is required. If the DTC is stored and read with the diagnostic instrument, it indicates intermittent bus-lead fault.
