194002478 - K045 HEATER PLUGS WARNING LIGHT NOT WORKING

With the ignition ON, the heater plugs warning light does not come on or it remains on and does not go out
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
First of all check that the engine failure warning light is not onMove on to Step 1Engine failure warning light onContinue as instructed in the    See table K101 MIL WARNING LIGHT STAYS ON (ENGINE STARTS)
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the Examiner equipment to the diagnostic socket.Check warning light operation in active diagnosis modeMove on to Step 21.Warning light does not come on1.Replace the instrument panel    Op. 5560B10 CONTROL PANEL - R+R
2.Warning light comes on2. Move on to Step 3
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Check for any errors in the NCMMove on to Step 3Errors signalledContinue following the instructions for the diagnostic equipment
3CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Check for any errors in the NBCMove on to Step 4Errors signalledContinue following the instructions for the diagnostic equipment
4ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the connections between the heater plugs control unit, engine management control unit, body computer and instrument panel are correct    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENTMove on to StepConnections faultyRestore the correct connections.
5CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis