Volvo Symptom D12D US02 Service Manual page 16

Group 20
Step 3: VCADS Pro Tests
Action:
Check preheater.
Check sensor values.
Check camshaft and flywheel signals at cranking speed.
Check the EPG function.
Note: If the exhaust brake is applied, cylinder compression will be affected,
which 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 fuel supply pressure at low and high engine speeds.
Check cylinder compression.
Check cylinder balancing.
"Step 4: Component and Function Checks" page 13
12
C2002640
D
Refer to:
Preheat, Test
Sensor Values Checks, Engine Not Running
Flywheel and Camshaft Signal, Test
Warm-Hold Function, Test
Engine Brake Function, Test
Fuel Supply Pressure, Check
Cylinder Compression, Test
Cylinder Balancing, Test
"Engine Difficult to Start" page 5