194002477 - K043 DISPLAY DOES NOT SHOW AVERAGE CONSUMPTION ON TRIP MODULE

With the ignition ON, the fuel consumption gauge in the display (one of the TRIP COMPUTER module displays) is not working. N.B: The display provides two types of fuel consumption, instantaneous or average. The consumption is processed by the instrument panel node on the basis of the information received by the body computer node (distance) and by the engine management node (litres consumed) made available to the instrument panel node via the B-CAN and C-CAN respectively. If speed information (from the Brake Node) or instantaneous consumption information (from the Engine Management Node) is missing, the consumption information will be replaced by "----"
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Interview the customer to check that the TRIP functions have not just been resetMove on to Step 1One of the Trip Computer functions has been resetThe information displayed will be "----" until a suitable stretch of road to evaulate the consumption is reached: if the value is not displayed after a few kilometres, move on to Step 1
1CAN CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Connect the EXAMINER diagnostic equipment and check the following at the CAN INFORMATION:

  • No control units inactive

  • No faulty control units

  • No control units with faulty CAN
Move on to Step 21. Fault on CAN network1. Continue following the instructions for the diagnostic equipment
2. Impossible to start a dialogue with the Body Computer2. Move on to Step 9
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic equipment connected, check the following at the BRAKE NODE:

  • No system/component errors

  • No CAN faults
Move on to Step 31. System/components faulty1. Continue following the instructions for the diagnostic equipment
2. Fault on C-CAN2. Move on to Step 11
3CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic equipment connected, check the following at the ENGINE MANAGEMENT NODE:

  • No system/component errors

  • No CAN faults
Move on to Step 41. System/components faulty1. Continue following the instructions for the diagnostic equipment
2. Fault on C-CAN2. Move on to Step 11
4CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic equipment connected, check the following at the INSTRUMENT PANEL NODE:

  • No system/component errors

  • No CAN faults
Move on to Step 51. System/components faulty1. Continue following the instructions for the diagnostic equipment
2. Fault on C-CAN2. Move on to Step 11
5ACTIVE DIAGNOSIS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the Examiner in the Instrument Panel Node ambient check in Active Diagnosis that all the LCD module segments are correctly activatedMove on to Step 81. One or more segments not activated1. Replace the instrument panel    Op. 5560B10 CONTROL PANEL - R+R
2. Impossible to start a dialogue with the instrument panel2. Move on to Step 6
6ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the electrical power supply for the "Instrument Panel Node" is correctMove on to Step 7Electrical power supply positive and/or earth faultyReplace defective component (in the case of a fuse, find out what caused it to blow).
7ELECTRICAL CONNECTIONS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the electrical connections between the Body Computer and Instrument Panel, in particular that each individual pin is correctly connectedMove on to Step 8Electrical connections not workingRenew the damaged electrical connections
8CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner in the Body Computer ambient, check that no errors are presentMove on to Step 121. Impossible to connect to the Body Computer control unit1. Move on to Step 9
2. Presence of errors2. Continue following the instructions for the diagnostic equipment
9ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the electrical power supply for the "Body Computer Node" is correct.Move on to Step 10Electrical power supply positive and/or earth faulty.Replace defective component (in the case of a fuse, find out what caused it to blow).
10CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Check, using the Examiner, that it is possible to connect to the Body Computer Node.Move on to Step 11Impossible to connect to the Body Computer control unit.Replace Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
11CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis