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DTC P2101 [L3 Turbo]

id0102b7811100

DTC P2101 | Throttle actuator circuit range/performance
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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
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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. (See RELAY INSPECTION.) • 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. (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 [L3 Turbo].) 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 [L3 Turbo].) 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 [L3 Turbo].)
No | Go to the next step.
23 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
No | Troubleshooting completed.