Display does not show range on trip module
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- Instrument panel › Display does not show range on trip module
DISPLAY DOES NOT SHOW RANGE ON TRIP MODULE
With the key ON, the range reading on the display (one of the displays on the TRIP COMPUTER module) is not operational.
The display shows the range processed by the instrument panel node on the basis of information received from the body computer node (distance and fuel level as a percentage) and from the engine management node (consumption) made available to the instrument panel node via the B-CAN and C-CAN networks respectively.
This data is then weighed on the capacity of the tank, programmed at the end of the line.
In the absence of speed information (from the Brake Node) or instantaneous fuel consumption data (from the Engine Control Node) or fuel level (from the Body Computer), the range information will be replaced by the reading "----"
| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|---|---|---|---|
| Interview the customer to check that the TRIP function have not been recently reset | Move on to Step 1 | One of the Trip Computer functions has been reset | The 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 | |
| 1 | CAN CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Connect an EXAMINER and check the following on CAN NETWORK INFORMATION:
| Move on to Step 2 | 1. Fault on CAN network | 1. Continue following the instructions for the diagnostic equipment | |
| 2. Communication impossible with the Body Computer | 2. Move on to Step 7 | |||
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Keeping the diagnostic instrument connected, check the following on the BRAKE NODE:
| Move on to Step 3 | 1. System/components faulty | 1. Continue following the instructions for the diagnostic equipment | |
| 2. Fault on C-CAN network | 2. Move on to Step 11 | |||
| 3 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Keeping the diagnostic instrument connected, check the following on the ENGINE CONTROL NODE:
| Move on to Step 4 | 1. System/components faulty | 1. Continue following the instructions for the diagnostic equipment | |
| 2. Fault on C-CAN network | 2. Move on to Step 11 | |||
| 4 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Keeping the diagnostic instrument connected, check the following on the INSTRUMENT PANEL NODE:
| Move on to Step 5 | 1. System/components faulty | 1. Continue following the instructions for the diagnostic equipment | |
| 2. Fault on C-CAN network | 2. Move on to Step 11 | |||
| 5 | ACTIVE DIAGNOSIS CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| 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 6 | 1. One or more segments does not activate | 1. Replace the Instrument Panel | |
| 2. Communication impossible with the instrument panel | 2. Move on to Step 6 | |||
| 6 | ELECTRICAL POWER SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check the electricity supply to the Instrument Panel Node is correct | Move on to Step 7 | Fault in positive electrical supply and/or earth | Replace defective component (in the case of a fuse, find out what caused it to blow) | |
| 7 | CHECK ELECTRICAL CONNECTIONS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check the wiring between the Body Computer and the Instrument Panel. In particular, check that each individual pin is properly connected | Move on to Step 8 | Electrical connections not operational | Renew the damaged electrical connections | |
| 8 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Using an Examiner check, in Body Computer Node mode, that there are no errors. | Move on to Step 9 | 1. Impossible to connect to the Body Computer control unit. | 1. Move on to Step 10 | |
| 2. Presence of errors | 2. Continue by following the instructions on the diagnostic instrument | |||
| 9 | CHECK ON FUEL LEVEL SENSOR | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Check correct operation of the fuel level sensor by carrying out the Test See Test 1040AC FUEL LEVEL GAUGE CHECK Check that the sensor is correctly connected to the Body Computer | Move on to Step 10 | 1.Sensor defective | 1.Replace sensor Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R | |
| 2.Sensor wiring interrupted | 2.Renew the wiring | |||
| 10 | ELECTRICAL POWER SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check the electricity supply to the Body Computer Node is correct. | Move on to Step 11 | Fault in positive electrical supply and/or earth | Replace defective component (in the case of a fuse, find out what caused it to blow). | |
| 11 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Use an Examiner to check the possibility of connection to the Body Computer Node. | Move on to Step 12 | Impossible to connect to the Body Computer control unit. | Replace Body Computer | |
| 12 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
| Check that the fault is no longer present | End of diagnosis |
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