Airbag failure warning light on
- Make
- Fiat
- Model
- Grande Punto Factory Service Manual
- Year
- 2005–2012
- Section
- Instrument panel › Airbag failure warning light on
AIRBAG FAILURE WARNING LIGHT ON
To apply this procedure, the following must be borne in mind:
1 - Measurements cannot be taken on the Air Bag wiring.
2 - The system fault diagnosis is started leaving the vehicle charges connected.
3- The fault should be "Present" or "Present Intermittently" and not "Intermittent". If the fault is Intermittent then the Procedure is not applicable; proceed with an accurate check on the line where the fault was signalled.
4 - Not all the simulation sensors are available (e.g. side impact sensors).
The airbag fault warning light is controlled by a dedicated connection to the airbag control unit Instrument Panel Node.
The Air Bag wiring is a safety component. If there are problems with the cables or the connectors then the wiring should be replaced in one piece.
| Test results | ||||
| 1 | ELECTRICAL CONNECTION CHECK | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check that the Air Bag wiring connected is connected to the control unit | Move on to Step 2 | The wiring connector is not connected to the control unit | With the ignition OFF, connect the connector to the control unit then turn the ignition key ON and check that the fault has disappeared | |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Connect the diagnostic equipment and activate the dialogue | Move on to Step 3 | The diagnostic dialogue is not activated | Proceed as instructed See table Z095 DIAGNOSIS CANNOT BE STARTED ON THE AIRBAG CONTROL UNIT | |
| 3 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Carry out the fault diagnosis of the Air Bag system until one or more errors of the Present type are notified by the control unit | Move on to Step 5 | The diagnostic equipment signals one or more Intermittent type errors | Check that the contact for the wiring connector pins is not loose (pins unstable in their housing, oxidized or distorted). Stress the Air Bag wiring (including any intermediate wiring and connectors between the control unit and the component) and move on to Step 4 | |
| 4 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Check whether the Intermittent type errors have become Present type errors | Move on to Step 5 | The Intermittent type errors have remained the Intermittent type | Delete the errors and move on to Step 7 | |
| 5 | ERRORS IN CONTROL UNIT CHECK | All OK | Problems encountered | Operation |
| Check which Present type error is communicated | 1- Error B0100 is present 2- Error U0001 is present 3- Error B0120 is present 4- Error B0119 is present 5- Error B0121 is present 6- Error B0122 is present 7- Error B0103 is present 8- Error B0113 is present 9- Error B0104 is present 10- Error B0105 is present 11- Error B0106 is present 12- Error B0107 is present 13- Error B0101 is present 14- Error B0108 is present 15- Error B0109 is present 16- Error B0114 is present 17- Error B0115 is present 18- Error B0111 is present 19- Error B0112 is present 20- Error B0118 is present 21- Error B0102 is present | 1- Turn the ignition key OFF. Replace the Air Bag control unit 2- Move on to Step 6 3- Turn the ignition key OFF. Replace the Air Bag control unit 4- Proceed as instructed See table B0119 Pretensioners impact data 5- Proceed as instructed See table B0121 Driver's side airbag impact data 6- Proceed as instructed See table B0122 Passeng. side airbag impact data 7- Proceed as instructed See table B0103 1st lev. driver's Airbag resist. 8- Proceed as instructed See table B0113 2nd lev. driver's Airbag resist. 9- Proceed as instructed See table B0104 1st lev. pass Airbag resist. 10- Proceed as instructed See table B0105 2nd lev. pass. Airbag resist. 11- Proceed as instructed See table B0106 Driver's pretens. resist. 12- Proceed as instructed See table B0107 Passenger pretens. resist. 13- Proceed as instructed See Test 5530BC CHECK BATTERY CHARGE STATUS 14- Proceed as instructed See table B0108 Driver's side airbag resist. 15- Proceed as instructed See table B0109 Pass. side airbag resist. 16- Proceed as instructed See table B0114 Left curtain airbag 17- Proceed as instructed See table B0115 Right curtain airbag 18- Proceed as instructed See table B0111 Left side impact sens. 19- Proceed as instructed See table B0112 Right side impact sens. 20- Proceed as instructed See table B0118 Incorrect configuration 21- Proceed as instructed See table B0102 Connec. to ECU container ground | ||
| 6 | CAN CONNECTIONS CHECK | All OK | Problems encountered | Operation |
| Check that the CAN connections between the air bag control unit and the rest of the network are not faulty | Move on to Step 7 | Connections faulty | Restore the correct connections and move on to Step 7 | |
| 7 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace the Air Bag control unit | |
Parts & tools for this job For 2005 Fiat Grande Punto
- TOOLOBD2 scanner with SRSSearch: OBD2 scanner ABS SRS
- TOOLTrim removal tool kitSearch: trim removal tool kit
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.