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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 P2101 >> Diagnostic procedure
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Diagnostic procedure

DTC P2101 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 VERIFY RELATED PENDING AND STORED DTCS 
  • Turn ignition switch to OFF, then ON (Engine off).
  • Verify pending and stored DTCs using the WDS or equivalent.
  • Are any DTCs present?
 Yes Go to appropriate DTC troubleshooting procedure.
No Go to the next step.
4 IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA 
  • Is DTC P2101 on FREEZE FRAME DATA?
 Yes Go to the next step.
No Go to troubleshooting procedures for DTC on FREEZE FRAME DATA.
5 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged, pulled out terminals, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 22.
No Go to the next step.
6 INSPECT MAIN RELAY OUTPUT VOLTAGE 
  • Turn the ignition switch to off.
  • Connect the PCM connector.
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between PCM terminal 2Y and body ground.
  • Is the voltage B+  ?
 Yes Go to Step 13.
No Go to the next step.
7 INSPECT MAIN RELAY CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the main relay.
  • Inspect for poor connection (such as damaged, pulled out terminals, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 22.
No Go to the next step.
8 INSPECT POWER SUPPLY OF MAIN RELAY 
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between main relay terminal D (harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit, then go to Step 22.
9 INSPECT POWER SUPPLY FOR CONTROL CIRCUIT OF MAIN RELAY 
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between main relay terminal A (harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit, then go to Step 22.
10 INSPECT MAIN RELAY 
 Yes Go to the next step.
No Replace the main relay, then go to Step 22.
11 INSPECT POWER CIRCUIT FOR OPEN CIRCUIT 
  • Turn the ignition switch to off.
  • Disconnect the main relay and the PCM connector.
  • Check for continuity between main relay terminal C (harness-side) and PCM terminal 2Y (harness-side).
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace the wiring harness for art open circuit, then go to Step 22.
12 INSPECT CONTROL CIRCUIT FOR OPEN CIRCUIT 
  • Check for continuity between main relay terminal E (harness-side) and PCM terminal 2X (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 22.
13 INSPECT DRIVE-BY-WIRE-RELAY OUTPUT VOLTAGE 
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between PCM terminal 4V (harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Go to the next step.
No Repair or replace the wiring harness for a short to power supply, then go to Step 22.
14 INSPECT DRIVE-BY-WIRE-RELAY CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the drive-by-wire-relay.
  • Check drive-by-wire-relay connector (harness-side) for poor connection (such as damaged, pulled out terminals, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 22.
No Go to the next step.
15 INSPECT POWER SUPPLY OF DRIVE-BY-WIRE-RELAY 
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between drive-by-wire-relay terminal D (harness-side) and body ground.
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit, then go to Step 22.
16 INSPECT POWER SUPPLY FOR CONTROL CIRCUIT OF DRIVE-BY-WIRE-RELAY 
  • Turn ignition switch to the ON position (Engine off).
  • Measure the voltage between drive-by-wire-relay terminal E (harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit between drive-by-wire-relay terminal E and main relay terminal C, then go to Step 22.
17 INSPECT DRIVE-BY-WIRE-RELAY 
  • Inspect the drive-by-wire-relay.

    (See RELAY INSPECTION ).

  • Is the drive-by-wire-relay normal?
 Yes Go to the next step.
No Replace the drive-by-wire-relay, then go to Step 22.
18 INSPECT POWER CIRCUIT FOR OPEN CIRCUIT 
  • Turn the ignition switch to off.
  • Check for continuity between drive-by-wire-relay terminal C (harness-side) and PCM terminal 4V (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 22.
19 INSPECT CONTROL CIRCUIT FOR OPEN CIRCUIT 
  • Check for continuity between drive-by-wire-relay A (Harness-side) and PCM terminal 3C (harness-side).
 Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit, then go to Step 22.
20 INSPECT THROTTLE POSITION SENSOR NO. 1 OUTPUT VOLTAGE 
  • Turn the ignition switch to off.
  • Connect the PCM connector.
  • Turn ignition switch to the ON position (Engine off).
  • Check voltage between PCM terminal 3M and body ground.
  • Is the voltage 0.40-0.60 V  ?
 Yes Go to the next step.
No Check the throttle position sensor No. 1 and related circuits and terminal.
(See THROTTLE POSITION (TP) SENSOR INSPECTION ).
Repair or replace if necessary, then go to Step 22.
21 INSPECT THROTTLE POSITION SENSOR NO. 2 OUTPUT VOLTAGE 
  • Turn ignition switch to the ON position (Engine off).
  • Check the voltage between PCM terminal 3J and body ground.
  • Is the voltage 4.40-4.60 V  ?
 Yes Go to the next step.
No Check the throttle position sensor No. 2 and related circuits and terminal.
(See THROTTLE POSITION (TP) SENSOR INSPECTION ).
Repair or replace as necessary, then go to the next step.
22 VERIFY TROUBLESHOOTING OF DTC P2101 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 the engine and run it at idle.
  • Turn ignition switch to OFF then ON (Engine off).
  • 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.
23 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No Troubleshooting completed.
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