Intake Manifold Air Pressure Is High
The Electronic Control Module (ECM) monitors the intake manifold air pressure. The following event is associated with high intake manifold air pressure:
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| Code for High Intake Manifold Air Pressure | ||
|---|---|---|
| J1939 Code | Description | Information |
| 102-16 | Engine Intake Manifold #1 Pressure : High - moderate severity | This pressure is a variable value that is calculated by the ECM. The resulting value is dependent on the operating conditions of the engine. |
- Turbocharger wastegate
- Wastegate regulator
- Disconnect the output rod in the wastegate actuator from the lever that operates the wastegate.
- Operate the wastegate lever by hand and check for full and free movement.
- Check that the output rod in the wastegate actuator is biased towards the retracted position.
- Connect the output rod in the wastegate actuator to the lever that operates the wastegate.
- Check the operation of the wastegate actuator. Refer to Systems Operation, Testing, and Adjusting, "Turbocharger - Inspect".
- If the wastegate or the wastegate actuator is not operating correctly, replace the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove (First Stage Turbocharger)" and Disassembly and Assembly, "Turbocharger - Install (First Stage Turbocharger)".
- Use the electronic service tool to check for diagnostic trouble codes that relate to the wastegate regulator. Rectify the cause of any related codes. Refer to Troubleshooting, "Diagnostic Trouble Codes".
- Ensure that any repairs have eliminated the fault.
- If the fault has not been eliminated, contact the Technical Communicator at a Caterpillar dealer.
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