18 · Diagnostics

C33 Transmission panel led not lit

Fault diagnosisC33 Transmission panel led not lit

When the ignition is switched on, the symbols on the gearbox panel do not light up.

Step	Test procedure	Result	Action
1	CHECK ON LIGHTING Verify: The condition of the background illumination LEDs	OK	Move onto step 2
1		Faulty LEDs	Replace LEDs End of diagnosis
2	CHECK ELECTRICAL CIRCUIT Verify: Supply to gearbox panel Fuse on dashboard unit Correct connections between dashboard unit and gearbox panel Correct connections between gearbox panel and earth Earth (see: Wiring diagram E7051 ROBOTIZED GEARBOX )	OK	Move onto step 3
		Incorrect supply	Restore correct supply: Wiring diagram E7051 ROBOTIZED GEARBOX End of diagnosis
		Connections not correct	Restore correct connections:Wiring diagram E7051 ROBOTIZED GEARBOX End of diagnosis
		Fuse blown	Replace fuse (and search for the cause of its blowing) End of diagnosis
		Faulty earth	Restore the earth contact:Wiring diagram E7051 ROBOTIZED GEARBOX End of diagnosis
3	CHECK GEARBOX PANEL Check condition of gearbox panel	OK	Move onto step 4
3	CHECK GEARBOX PANEL Check condition of gearbox panel	Gearbox panel faulty	Replace gearbox panel Op. 2127A12 End of diagnosis
4	CHECK ON CORRECT OPERATION Check that the fault is no longer present	OK	Incorrect selection of diagnostic procedure
4		Fault persists	Incorrect selection of diagnostic procedure

Parts & tools for this job For 2000 Alfa Romeo 147

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