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Fiat Croma Factory Service Manual (2005-2010)22 · Fault diagnosis
22 · Diagnostics

Handbrake applied warning light

Make
Fiat
Model
Croma Factory Service Manual
Year
2005–2010
Section
Instrument panel › Handbrake applied warning light
Fault diagnosisHandbrake applied warning light

HANDBRAKE APPLIED WARNING LIGHT

The warning light is always lit even with the handbrake released.

N.B.: The parking brake warning light activation command is sent by the switch on the lever to the Body Computer Node, which makes it available via the B-CAN network to the Instrument Panel Node.

0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Check that the ABS lights up and goes off normally during the initial test.Move on to Step 1The ABS warning light stays on as well

Continue as instructed in the

See table K062 ABS AND HANDBRAKE WARNING LIGHTS BOTH ON

1ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the earth insulation of the wiring between the Parking brake lever and Body Computer.Move on to Step 2Wiring not insulated

Restore wiring

See E4010 INSTRUMENT PANEL

2SWITCH CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition of the wiring on the parking brake lever.Move on to Step 3Switch defectiveReplace the switch
3ACTIVE DIAGNOSIS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the Examiner in Instrument Panel Node mode check that the handbrake warning light is correctly activated in Active Diagnosis.Move on to Step 61. The handbrake warning light does not flash

1. Replace the instrument panel

Op. 5560B10 CONTROL PANEL - R+R

2. Impossible to connect with the Instrument Panel Node2.Move on to Step 4
4CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner diagnostic equipment in Instrument Panel Node mode, check that there are no errors and that the parameters are present.Move on to Step 5Presence of errorsContinue following the instructions on the diagnostic tester
5ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the Instrument panel node electrical supply is correct.Move on to Step 6Fault in electrical supply positive and/or earth.Replace defective component (in the case of a fuse, find out what caused it to blow).
6CHECK ELECTRICAL CONNECTIONSALL OKPROBLEMS ENCOUNTEREDACTION
Check the electrical connections between the Body Computer and Instrument Panel, in particular that each individual pin is correctly connected.Move on to Step 7Electrical connections not operational.Renew the damaged electrical connections
7CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner diagnostic equipment in Body Computer Node mode that there are no errors and that the parameters are present.Move on to Step 101. Impossible to connect to the Body Computer control unit.1. Move on to Step 8
2. Presence of errors2. Continue following the instructions on the diagnostic tester
3. The parameter values do not change3. Move on to Step 9
8ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the Body Computer Node electrical supply is correct.Move on to Step 9Fault in electrical supply positive and/or earth.Replace defective component (in the case of a fuse, find out what caused it to blow).
9CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Use the Examiner to check the possibility of connection to the Body Computer Node.Move on to Step 10Impossible to connect to the Body Computer control unit.

Replace Body Computer

Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.

10CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis

Parts & tools for this job For 2005 Fiat Croma

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