HOLDEN GEN III V8, Service Training

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GEN III V8 ENGINE MANAGEMENT
The following DTCs will set if the PCM detects an engine speed outside the lAC's operating
range.
DTC P0506 Idle Speed Low
Conditions for running DTC P0506
• DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0171, P0172, P0174, P0175,
P0443,are not set.
• The engine run time is greater than 60 seconds.
• The engine coolant temperature is greater than 60°C.
• The intake air temperature is greater than -10°C.
• The barometric pressure is greater than 65 kPa.
• The ignition voltage is between 9.0 and 17.0 volts.
• The vehicle speed is less than two km/h.
Conditions for setting DTC P0506
• The actual idle speed is 100 RPM less than the desired idle speed.
• All of the above conditions are present for at least 1 5 seconds.
Action taken when DTC P0506 Sets
• The PCM illuminates the Check Powertrain Lamp when the diagnostic runs and fails.
• The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information
in the Freeze Frame/Failure Records.
Conditions for clearing the Check Powertrain Lamp and DTC P0506
• The PCM turns the Check Powertrain Lamp OFF after one ignition cycle that the diagnostic runs and does
not fail.
• A last test failed (current DTC) clears when the diagnostic runs and does not fail.
DTC P0507 Idle Speed High
Conditions for running DTC P0507
• DTCs P0101, P0102, P0103, P0107, P0108, P 0 1 1 2 , P 0 1 1 3 , P0117, P 0 1 1 8 , P 0 1 7 1 , P0172, P0174, P0175,
P0443, are not set.
• The engine run time is greater than 60 seconds.
• The engine coolant temperature is greater than 60°C (140°F).
• The intake air temperature is greater than -10°C (14°F).
• The barometric pressure is greater than 65 kPa.
• The ignition voltage is between 9.0 and 17.0 volts.
• The vehicle speed is less than two km/h.
Conditions for setting DTC P0507
• The actual idle speed is 100 RPM more than the desired idle speed.
• All of the above conditions are present for 1 5 seconds.
Action taken when DTC P0507 Sets
• The PCM illuminates the Check Powertrain Lamp when the diagnostic runs and fails.
• The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information
in the Freeze Frame/Failure Records.
Conditions for clearing the Check Powertrain Lamp and DTC P0507
• The PCM turns the Check Powertrain Lamp OFF after one ignition cycle that the diagnostic runs and does
not fail.
• A last test failed (current DTC) clears when the diagnostic runs and does not fail.
GEN III V8 ENGINE MANAGEMENT Page • 101