Volvo Symptom D12D US02 Service Manual page 13

Group 20
Step 3: VCADS Pro Tests
Action:
Check fuel supply pressure (while cranking the engine with the starter motor).
Check vehicle information to verify that the engine software is available.
Note: If no software numbers are available in MID 128, Engine ECU, the
engine will not run.
Check "Immobilizer Pin Code" (parameter DUR) and "Immobilizer Menu Enable"
(parameter DYF).
Check sensor values.
Check history of fuel supply pressure.
Check camshaft and flywheel signals at cranking speed.
Check the EPG function.
Note: If the exhaust brake is applied, cylinder compression will be affected.
This results in engine starting faults.
Check the engine compression brake (vehicles equipped with VCB).
Note: If VCB is active, compression can not build up in the cylinders. This
results in engine starting faults.
Check cylinder compression.
Check engine ECU protection data.
Check Bodybuilder module inputs. (Trucks equipped with Bodybuilder modules only)
Check Fault codes.
Note: Active fault code when the starter motor is engaged can affect
starting the engine. Check for active fault codes while cranking the engine.
"Step 4: Component and Function Checks" page 10
C2002640
D
Refer to:
Fuel Supply Pressure Check
Vehicle Information, Test
Parameter, Programming
Sensor Values, Engine not Running
Sensor Values, History
Flywheel and Camshaft Signal, Test
Warm Hold Function, Test
Engine Brake Function, Test.
Cylinder Compression, Test.
Engine Protection, Data
Body Builder Module in-out signals, Test
Fault Codes
"Engine Does Not Start" page 5
9