2398827 - K44 DISPLAY DOES NOT SHOW INSTANT CONSUMPTION ON TRIP METER
The fuel consumption indiator in the display (one of the TRIP COMPUTER module displays) does not work with te ignition ON. | The display shows two types of fuel consumption, instantaneous and average. The fuel consumption figures are processed by the instrument panel node on the basis of the information received from the body computer node (distance) and from the engine management node (litres consumed), made available to the instrument panel node via the B-CAN and the C-CAN, respectively. |
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Speak to the customer to check that the TRIP functions have not just been reset | Continue to Step 1 | One of the TRIP COMPUTER functions has been reset | The information displayed will be '----' until a stretch of road sufficient to evaluate the consumption is travelled along: if the value is not displayed after a few kilometresContinue to Step 1 | |
| 1 | CAN CHECKS | All OK | Problems met | Operation |
Connect the EXAMINER diagnostic equipment and check the CAN NETWORK INFORMATION:
| Continue to Step 2 | Presence of faults in the CAN | Continue as instructed by the tester | |
| Impossible to converse with the Body Computer | Continue to Step 9 | |||
| 2 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Keep the tester connected and check the BRAKE NODE for:
| Continue to Step 3 | System/component faults | Continue as instructed by the tester | |
| Presence of C-CAN faults | Continue to Step 11 | |||
| 3 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Keeping the diagnostic equipment connected, check for the following at the ENGINE MANAGEMENT NODE:
| Continue to Step 4 | System/component faults | Continue as instructed by the tester | |
| Presence of C-CAN faults | Continue to Step 11 | |||
| 4 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Keeping the diagnostic equipment connected, check at the INSTRUMENT PANEL NODE:
| Continue to Step 12 | System/component faults | Continue as instructed by the tester | |
| Presence of C-CAN faults | Continue to Step 11 | |||
| 5 | CHECK WITH ACTIVE DIAGNOSIS | All OK | Problems met | Operation |
| With the Examiner in the Instrument Panel Node ambient, check, in active diagnosis, that all the segments in the LCD module are correctly activated | Continue to Step 8 | One or more segments are not activated | Replace the instrument panel Op. 5560B11 | |
| Impossible to converse with the instrument panel | Continue to Step 6 | |||
| 6 | ELECTRIC POWER SUPPLY CHECK | All OK | Problems met | Operation |
| Check that the Instrument Panel Node electrical power supply is correct | Continue to Step 7 | Positive and/or earth electrical power supply faulty | Replace the component involved (if a fuse is involved, search for the cause of the problem) | |
| 7 | CHECK ELECTRICAL CONNECTIONS | All OK | Problems met | Operation |
| Check the electrical connections between the Body Computer and the Instrument Panel, in particular that each individual pin is correctly connected | Continue to Step 5 | Electrical connections not working | Restore damaged electrical connections. | |
| 8 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Using the Examiner check, in the Body Computer Node ambient, that there are no errors | Continue to Step 11 | Impossible to connect with the Body Computer control unit | Continue to Step 9 | |
| There are errors | Continue in accordance with the instructions for the diagnostic equipment | |||
| 9 | ELECTRIC POWER SUPPLY CHECK | All OK | Problems met | Operation |
| Check that the Body Computer Node electrical power supply is correct. | Continue to Step 10 | Positive and/or earth electrical power supply fault. | Replace the defective component (if a fuse is involved, search for the cause of the problem). | |
| 10 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Using the Examiner, check the possibility of connecting with the Body Computer Node. | Continue to Step 8 | Impossible to connect with the Body Computer control unit. | Replace the Body Computer Op. 5505A32 | |
| 11 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Replace the Body Computer Op. 5505A32 | |
| 12 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Replace the instrument panel Op. 5560B11 | |