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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] >> DTC P2100 >> Diagnostic procedure
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Diagnostic procedure

DTC P2100 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has the FREEZE FRAME DATA been recorded?
 Yes Go to the next step.
No Record FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or online repair information availability.
  • Is any related repair information available?
 Yes Perform the 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.
3 CLASSIFY INTERMITTENT CONCERN OR CONTINUOUS CONCERN 
  • Clear the DTC using the WDS or equivalent.
  • Start the engine and let it idle.
  • Is the same PENDING CODE present?
 Yes Go to the next step.
No Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure.
(See INTERMITTENT CONCERN TROUBLESHOOTING ).
4 INSPECT THROTTLE BODY CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the throttle body connector.
  • Check for poor connection (such as damaged, pulled out terminals, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 13.
No Go to the next step.
5 INSPECT THROTTLE VALVE ELECTRICAL MALFUNCTION 
  • Measure resistance between throttle body terminal E and F (part-side).
  • Is resistance approx. 1.3 ohms  ?
 Yes Go to the next step.
No Replace the throttle body, then go to Step 13.
6 CLASSIFY MALFUNCTION ET POWER SUPPLY CIRCUIT OR CONTROL CIRCUIT 
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between throttle body terminal F (harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Malfunction at control circuit.
Go to the next step.
No Malfunction at power supply circuit.
Go to the next step.
7 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the PCM connector.
  • Check for poor connection (such as damaged, pulled out terminals, corrosion).
  • Is there any malfunction?
 Yes Repair terminal, then go to Step 13.
No Go to the next step.
8 INSPECT POWER CIRCUIT FOR SHORT TO GROUND 
  • Turn the ignition switch to off.
  • Check for continuity between throttle body terminal F (harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace the wiring harness to a short to ground, then go to Step 13.
No Go to the next step.
9 INSPECT POWER CIRCUIT FOR OPEN CIRCUIT
  • Turn the ignition switch to off.
  • Check for continuity between throttle body terminal F (harness-side) and PCM terminal 4Y (harness-side).
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit, then go to Step 13.
10 INSPECT CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between throttle body terminal E (harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Repair or replace the wiring harness for a short to power supply, then go to Step 13.
No Go to the next step.
11 INSPECT CONTROL CIRCUIT FOR SHORT TO GROUND 
  • Turn the ignition switch to off.
  • Check for continuity between throttle body terminal E (harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace the wiring harness for a short to ground, then go to Step 13.
No Go to the next step.
12 INSPECT CONTROL CIRCUIT MALFUNCTION FOR OPEN CIRCUIT
  • Check for continuity between throttle body terminal E (harness-side) and PCM terminal 4AB (harness-side).
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit, then go to the next step.
13 VERIFY TROUBLESHOOTING OF DTC P2100 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn ignition switch to the ON position (Engine off).
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start engine and warm it up completely.
  • Is the same DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION ).
No Go to the next step.
14 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No Troubleshooting completed.
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