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Diagnostic procedure

DTC P2144 - DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 CLASSIFY INTERMITTENT CONCERN OR CONTINUOUS CONCERN 
  • Turn key to OFF then ON (Engine off).
  • Is same DTC present?
 Yes Go to the next step.
No Intermittent concern exists. Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure.
(See INTERMITTENT CONCERN TROUBLESHOOTING .)
3 CLASSIFY OPEN CIRCUIT OR SHORT TO GROUND MALFUNCTION 
  • Disconnect EGR boost sensor solenoid valve tube that connects to intake manifold.
  • Connect vacuum pump to purge solenoid valve.
  • Pump vacuum pump several times.
  • Wait a few seconds  .
  • Is vacuum maintained?
 Yes Go to Step 5.
No Go to the next step.
4 INSPECT PASSAGE CONTROL OF EGR BOOST SENSOR SOLENOID VALVE 
  • Turn the ignition switch off.
  • Disconnect EGR boost sensor solenoid valve connector.
  • Pump vacuum pump several times and stop to pumps then wait a few seconds  .
  • Is vacuum maintained?
 Yes Repair or replace harness for short to ground, then go to Step 10.
No Replace EGR boost sensor solenoid valve, then go to Step 10.
5 INSPECT POOR CONNECTION OF EGR BOOST SENSOR SOLENOID VALVE CONNECTOR 
  • Turn the ignition switch off.
  • Check for poor connection (damaged, pulled-out pins, corrosion, etc.).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 10.
No Go to the next step.
6 INSPECT EGR BOOST SENSOR SOLENOID VALVE 
  • Measure resistance between EGR boost sensor solenoid valve terminals (part-side).
  • Is resistance within 37-43 ohms? 
 Yes Go to the next step.
No Replace EGR boost sensor solenoid valve, then go to Step 10.
7 INSPECT EGR BOOST SENSOR SOLENOID VALVE POWER SUPPLY CIRCUIT FOR OPEN 
  • Turn key to ON (Engine off).
  • Measure voltage between EGR boost sensor solenoid valve terminal A (harness-side) and body ground.
  • Is voltage B+  ?
 Yes Go to the next step.
No Repair or replace harness for open, then go to Step 10.
8 INSPECT POOR CONNECTION OF PCM CONNECTOR 
  • Turn the ignition switch off.
  • Disconnect PCM connector.
  • Check for poor connection (damaged, pulled-out pins, corrosion, etc.).
  • Is there any malfunction?
 Yes Repair terminal, then go to Step 10.
No Go to the next step.
9 INSPECT EGR BOOST SENSOR SOLENOID VALVE CONTROL CIRCUIT FOR OPEN 
  • Connect EGR boost sensor solenoid valve connector.
  • Connect breakout box with PCM disconnected.
  • Turn key to ON (Engine off).
  • Measure voltage between breakout box terminal 93 and body ground.
  • Is voltage B+  ?
 Yes Go to the next step.
No Repair or replace harness for open, then go to the next step.
10 VERIFY TROUBLESHOOTING OF DTC P2144 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn key to OFF then ON (Engine off).
  • Is same DTC present?
 Yes Replace PCM, then go to the next step.
No Go to the next step.
11 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Troubleshooting completed.
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