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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System - 4.6L (LH2) - DTC P0010 To P0153) >> DTC P0016, P0017, P0018, or P0019 >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.
  1. 2:  This step determines if the condition is present.
  2. 4:  An incorrectly installed camshaft or timing chain can cause these DTCs to set.
DTC P0016, P0017, P0018, or P0019

Step Action Values Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Control Module Connector End Views or Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 
  1. Start the engine.
  2. Allow the engine to reach the normal operating temperature.
  3. Observe the DTC information with a scan tool.
Does the scan tool display DTC P0016, P0017, P0018, or P0019 failed this ignition?		 - Go to Step 4  Go to Step 3 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 4  Go to Diagnostic Aids
4  Repair one of the following conditions with the camshaft timing drive components system:
  • A stuck or sticking camshaft position actuator oil control valve
  • A stuck camshaft position actuator
  • A slow returning camshaft position actuator
  • A misaligned timing chain
  • An incorrectly installed timing chain
  • Excessive play in the timing chain
  • A timing chain that jumped teeth
  • A timing chain tensioner condition

Refer to Camshaft Timing Drive Chain Alignment Diagram and Camshaft Timing Drive Components Cleaning and Inspection in Engine Mechanical.
Did you find and correct the condition?		 - Go to Step 6  Go to Step 5 
5 Replace the engine control module (ECM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 6  -
6
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 7 
7 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information System OK
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