22 · Diagnostics

Battery charge status check

Make: Fiat
Model: Grande Punto Factory Service Manual
Year: 2005–2012
Section: Starting › Battery charge status check

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Fault diagnosisBattery charge status check

BATTERY CHARGE STATUS CHECK

1.3 Multijet

The customer complains of: The engine does not start, the starter motor is working normally

1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
		Test results
	Select the following control unit at the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD). Check the value of the following parameter: - Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK	Move on to Step 2
2	POWER SUPPLY CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check there are no faults in the fuel supply circuit See Test 1040OA FUEL SUPPLY CIRCUIT CHECK	Move on to Step 3
3	HIGH PRESSURE CHECK	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket. Check that the diesel pressure parameter is correct as described in the test. See Test 1060OD HIGH PRESSURE FUEL CIRCUIT CHECK	Move on to Step 10	Pressure not correct	Move on to Step 4
4	LOW RETURN PRESSURE CHECK	All OK	Problems encountered	Operation
	Check, as described in the test, that the pressure in the return pipe to the tank is less than 1 bar See Test 1060OA LOW FUEL RETURN PRESSURE CIRCUIT CHECK	Move on to Step 5	Pressure above the maximum limit: return pipe to the tank obstructed	Repair the pipe, if necessary, replace it
5	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check, as described in the test, that the diesel pressure between the filter and the pressure pump is between 2 and 3 bar See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECK	Move on to Step 10	Pressure below the minimum limit or above the maximum limit	Move on to Step 6
6	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the difference in pressure upstream and downstream of the filter is less than 1 bar	Move on to Step 7	Difference in pressure more than 1 bar	Replace the diesel filter cartridge Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE
7	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the supply pump pressure at the filter inlet is more than 2.2 bar	Move on to Step 10	Pressure below 2 bar	Move on to Step 8
8	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Measure the difference in pressure between the electrical pump outlet and the filter inlet checking that it is less than 0.3 bar	Move on to Step 9	Difference in pressure more than 0.3 bar	Replace the pipe
9	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check, as described in the test, that the pump supply voltage is equal to 12 V and that the current uptake is between 2 and 10 A See Test 1040AA CHECK ON SUPPLY VOLTAGE AND CURRENT UPTAKE	Move on to Step 10	1. Voltage lower than 12 V 2. Current greater than 10 A: pump defective 3. Current less than 2 A: pump obstructed	1. Check electrical wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT 2. Replace the fuel pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R 3. Replace the fuel pump and clean the fuel tank Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
10	CHECK CORRECT OPERATION	All OK	Problems encountered	Operation
	Replace the high pressure pump and check that the fault is no longer present Op. 1060E10 DIESEL INJECTION PRESSURE PUMP - R.R.	End of diagnosis	Fault persists	Move on to Step 11
11	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS	Move on to Step 13	Cylinder compression insufficient	Move on to Step 12
12	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	Check the valve seal. Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET Check condition of cylinders/piston rings	Move on to Step 13	1. Valve seal insufficient 2. Cylinders/piston rings worn	1. Overhaul the head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL 2. Restore the seal
13	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD). Check the value of the following parameters: - Engine rpm See Test 1060GA RPM SENSOR EFFICIENCY CHECK - Press. Diesel measured See Test 1060GH DIESEL PRESSURE CHECK	Move on to Step 14
14	PREHEATING RELAY ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the active diagnosis of the preheating relay, checking that the result is positive The check on the following system is only necessary if the outside temperature is below 0 °C.	Move on to Step 16	The result of the active diagnosis is negative	Move on to Step 15
15	HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the heater plugs are working properly See Test 5520CA CHECK GLOW PLUG OPERATION	Move on to Step 16
16	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R

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Parts & tools for this job For 2005 Fiat Grande Punto

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