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PCM/Tech 1 Scan Tool 73
®
05745159
DTC P0238 - Turbocharger (TC) Boost Sensor Circuit High Voltage
Step Action Value(s) Yes No
1
Important:
Before clearing DTC(s) use the scan tool “Capture Info” to record freeze frame and failure records for reference, as data will be lost Was the
“On-Board Diagnostic (OBD) System Check”
performed? — Go to Step 2. Go to
OBD System Check.
2 1. Scan tool connected. Does the scan tool display a Boost Pressure greater than or equal to the 202 kPa (4.8v) Go to Step 3. Go to Step 4. 3 1. Turn the ignition “OFF”. 3. Turn the ignition “ON”. Does the scan tool display a Boost Pressure less than or equal to the speci- 9 kPa Go to Step 5. Go to Step 9. 4 DTC is intermittent. If no additional DTCs are stored, refer to “Diagnostic — Go to the Applicable DTC table. Go to Diagnostic Aids. 5 1. Ignition ON, engine OFF> the boost sensor harness. Is voltage greater than the specified value? 5.2v Go to Step 10. Go to Step 6. 6 1. Boost sensor disconnected. connected to B+. Is the test light “ON”. — Go to Step 7. Go to Step 11. 7 Check the Boost sensor for a restriction. — Go to Step 13. Go to Step 8. 8 Replace the faulty Boost sensor. — Go to Step 13. — 9 Check for a short to voltage in the Boost sensor signal circuit. — Go to Step 13. Go to Step 12. 10 Check for a short to ground in the Boost sensor circuit. — Go to Step 13. Go to Step 12. 11 Repair the Boost sensor circuit as necessary. — Go to Step 13. — 12 Replace the faulty PCM.
Notice:
If the PCM is faulty, the new PCM must be programmed. Go to
PCM replacement and programming procedures.
Is the action complete? — Go to Step 13. — 13 1. Using the Scan Tool, select “DTC”, “Clear Info”. 3. Select “DTC”, “Specific”, then enter the DTC number which was set. 4. Operate vehicle within the conditions for setting this DTC as specified in the supporting text. Does the Scan Tool indicate that this diagnostic Ran and Passed? — Go to Step 14. Go to Step 2. 14 Using the Scan Tool, select “Capture Info”, “Review Info”. — Go to the applicable DTC table System OK. |