Home

Mazdamanuals.com

 DTC P2101 [L3 Turbo]

DTC P2101 [L3 Turbo]

id0102b7811100

DTC P2101

Throttle actuator circuit range/performance

DETECTION CONDITION

• If the PCM detects any of the following conditions, the PCM determines that the throttle circuit has a malfunction.
- Default throttle angle that the PCM stored and the throttle angle with drive-by-wire-relay off is not significant.
- Voltage from drive-by-wire-relay is too high or too low.
- PCM detects large voltage difference between the drive-by-wire-relay and the main relay.
- PCM internal malfunction.
Diagnostic support note
• This is a continuous monitor.
• MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in PCM memory.

POSSIBLE CAUSE

• Drive-by-wire-relay and related circuit malfunction
• Main relay and related circuit malfunction
• Throttle position sensor No.1 and related circuit malfunction
• Throttle position sensor No.2 and related circuit malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service 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
• Inspect the main relay.
• Is the main relay normal?
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 an 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.
• 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.
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.
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.
No
Go to the next step.
23
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.