9-3 Arc/Aero (9440) L4-2.0L Turbo (2.0 T) (2004)
Fault symptom
Diagnostic tool indicates "No I-bus system can be contacted".
Diagnostic help
-
Communication with CIM is necessary for Tech 2 to be able to communicate with all systems.
-
The Diagnostic instrument main menu "All systems/Read configuration" shows a list of those systems with which the vehicle in question was
equipped before the fault was detected.
-
The current status of each system is shown to the right.
-
"OK" if control module communicates correctly.
-
"MISSING" if control module is not on the bus.
-
"ADDED" if the control module has not yet been added.
-
"NOT EQUIPPED" indicates that the control module is not fitted to the vehicle.
NOTE: applies before reset of bus configuration.
Voltage measured on a normal I-bus fluctuates between Approx. 200mV to Approx. 400mV. Voltage measured close to 0mV/above 400mV is an
indication of short circuit to ground/B+.
Functions in the diagnostic tool related to the fault
-
Read/Reset Bus Configuration
-
Read/Clear Bus Off Counter
-
Response Test
Checking the wiring harness
IMPORTANT: 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.
No P-Bus System Can Be Contacted
No P-bus System Can Be Contacted
Fault symptom
Diagnostic tool indicates "No P-bus system can be contacted".
Diagnostic help