Volvo Symptom D12D US02 Service Manual page 82

Group 20
Step 3: VCADS Pro Tests
Action:
Check sensor values.
Check that individual injectors are functioning properly.
Check cylinder balance.
Check cylinder compression.
Check fuel supply pressure at low and high engine speeds.
Check start and warm-hold function.
Check the fan function.
"Step 4: Component and Function Checks" page 79
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C2002640
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Refer to:
"Sensor Values Check, (Engine Running)"
Injector Cut-Out, manual
Cylinder balancing, Check
Cylinder Compression, Test
Fuel Supply Pressure, Check
Warm-Hold Function, Test
Engine Cooling Fan, Test
"Engine Speed Surges at Low or High Idle" page 73