939003645 - K043 DISPLAY DOES NOT SHOW AVERAGE CONSUMPTION ON TRIP MODULE

With the key ON, the fuel consumption gauge on the display (one of the displays on the TRIP COMPUTER module) is not operational. N.B: The display provides two types of fuel consumption reading, instantaneous or average. The fuel consumption readings are processed by the instrument panel node on the basis of information received from the body computer node (mileage) and the engine control node (litre of fuel consumed) made availablet to the instrument panel node via the B-CAN and C-CAN networks respectively. In the absence of speed information (from the Brake Node) or instantaneous fuel consumption data (from the Engine Control Node), the fuel consumption data will be replaced by the reading "----"
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Interview the customer to check that the TRIP function have not been recently resetMove on to Step 1One of the Trip Computer functions has been resetThe display reading will be "----" until sufficient distance has been covered to allow fuel consumption to be evaluated: if the value is not displayed after a few kilometres, continue to Step 1
1CAN NETWORK CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Connect an EXAMINER and check the following on CAN NETWORK INFORMATION:

  • No control units inactive

  • No faulty control units

  • No control units with faulty CAN line
Move on to Step 21. Fault on CAN network1. Continue following the instructions for the diagnostic equipment
2. Communication impossible with the Body Computer2. Move on to Step 9
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic instrument connected, check the following on 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-CAN network2. Move on to Step 11
3CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic instrument connected, check the following on the ENGINE CONTROL 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-CAN network2. Move on to Step 11
4CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic instrument connected, check the following on 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-CAN network2. Move on to Step 11
5ACTIVE DIAGNOSIS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the Examiner in Instrument Panel Node mode check that all segments of the LCD module are correctly activated in Active Diagnosis.Move on to Step 81. One or more segments does not activate1. Replace the instrument panel    Op. 5560B10 CONTROL PANEL - R+R
2. Communication impossible with the instrument panel2. Move on to Step 6
6ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the Instrument Panel Node elecricity supply is correctMove on to Step 7Fault in positive electricity supply and/or earthReplace defective component (in the case of a fuse, find out what caused it to blow).
7CHECK ELECTRICAL CONNECTIONSALL OKPROBLEMS ENCOUNTEREDACTION
Check the electrical connections between the Body Computer and the Instrument Panel, in particular that each individual pin is correctly connectedMove on to Step 8Electrical connections not operatingRenew the damaged electrical connections
8CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner in Body Computer mode, check that the following errors are not present:Move on to Step 121. Impossible to connect to the Body Computer control unit.1. Move on to Step 9
2. Presence of errors2. Continue by following the instructions on the diagnostic instrument
9ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the Body Computer Node elecricity supply is correctMove on to Step 10Fault in positive electricity supply and/or earthReplace defective component (in the case of a fuse, find out what caused it to blow).
10CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Use an Examiner to check the possibility of connecting to the Body Computer NodeMove on to Step 11Impossible to connect to the Body Computer control unit.Replace Body Computer    Op. 5505A32 BODY COMPUTER - R.R
11CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis