HOLDEN GEN III V8, Service Training

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GEN III V8 ENGINE MANAGEMENT
DTC P 1 1 1 4 Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage
Conditions for running DTC P 1 1 1 4
• The engine run time is greater than 1 0 seconds.
Conditions for setting DTC P 1 1 1 4
• The Engine Coolant Temperature is greater than 139°C for at least one second.
Action taken when DTC P 1 1 1 4 Sets
• The PCM stores the DTC information into memory when the diagnostic runs and fails.
• The Check Powertrain Lamp will not be illuminated.
• 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 P 1 1 1 4
• A last test failed (Current DTC) will clear when the diagnostic runs and does not fail.
DTC P 1 1 1 5 Engine Coolant Temperature Sensor Circuit Intermittent High Voltage
Conditions for running DTC P 1 1 1 5
• The engine run time is greater than 60 seconds.
Conditions for setting DTC P 1 1 1 5
• The Engine Coolant Temperature is less than -35°C for at least one second.
Action taken when DTC P 1 1 1 5 Sets
• The PCM stores the DTC information into memory when the diagnostic runs and fails.
• The Check Powertrain Lamp will not be illuminated.
• 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 P 1 1 1 5
• A last test failed (Current DTC) will clear when the diagnostic runs and does not fail.
DTC P1258 Engine Coolant Over Temp Fuel Disabled
Conditions for running DTC P1258
• DTCsPO-117, P0118, are not set.
• The engine is running.
Conditions for setting DTC P1258
• The engine coolant temperature is greater than 132°C.
• The above conditions present for greater than 1 0 seconds.
Action taken when DTC P1258 Sets
• The PCM will randomly disable several injectors.
• 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 P1258
• The PCM turns the Check Powertrain Lamp OFF when the diagnostic runs and does not fail.
• A last test failed (Current DTC) will clear when the diagnostic runs and does not fail.
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