DTC P2101 [L8, LF]

id0102b1811100

DTC P2101 | Throttle valve actuator circuit range/performance problem
--- | ---
DETECTION CONDITION | • The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay on. If the input voltage is less than 5.0 V, the PCM determines that the drive-by-wire relay control circuit voltage is low. • The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay off. If the input voltage is more than 5.0 V the PCM determines that the drive-by-wire relay control circuit voltage is high. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction conditions during the first drive cycle. • FREEZE FRAME DATA (Mode 2/Mode 12) is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Main relay and/or drive-by-wire relay malfunction • PCM connector or terminals malfunction • Main relay related fuse malfunction • Main relay related wiring harness malfunction • Drive-by-wire relay related wiring harness malfunction • Throttle body connector or terminals malfunction • TP sensor No.1/No.2 related wiring harness malfunction • TP sensor No.1/No.2 malfunction • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED • Has the FREEZE FRAME DATA (Mode 12) been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2 | VERIFY RELATED SERVICE 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 CODE AND STORED DTC • Turn the ignition switch off, then to the ON position (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [L8, LF].) • Are any DTCs present? | Yes | Go to the appropriate DTC troubleshooting. (See DTC TABLE [L8, LF].)
No | Go to the next step.
4 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2) • Perform the Freeze Frame PID Data Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [L8, LF].) • Is the DTC P2101 on FREEZE FRAME DATA (Mode 2)? | Yes | Go to the next step.
No | Go to the DTC troubleshooting on FREEZE FRAME DATA (Mode 2). (See DTC TABLE [L8, LF].)
5 | INSPECT RELAY • Turn the ignition switch off. • Remove the main relay and drive-by-wire relay. • Inspect the main relay and drive-by-wire relay. (See RELAY INSPECTION.) • Is there any malfunction? | Yes | Replace the main relay and/or drive-by-wire relay, then go to Step 22.
No | Go to the next step.
6 | INSPECT PCM CONNECTOR AND TERMINALS • Disconnect the PCM connector. • Inspect for poor connection (such as damaged, pulled out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the connector or terminals, then go to Step 22.
No | Go to the next step.
7 | INSPECT MAIN RELAY AND DRIVE-BY-WIRE RELAY CIRCUITS FOR SHORT TO POWER SUPPLY • Main relay and drive-by-wire relay are removed, and PCM connector is disconnected. • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between the following terminals (wiring harness-side) and body ground: ― PCM terminal 1BE ― PCM terminal 1BF ― PCM terminal 1AX • Is there any voltage? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 22.
No | Go to the next step.
8 | INSPECT MAIN RELAY OUTPUT VOLTAGE • Turn the ignition switch off. • Install the main relay and drive-by-wire relay. • Reconnect the PCM connector. • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between PCM terminal 1BE (wiring harness-side) and body ground. • Is the voltage B+? | Yes | Go to Step 12.
No | Go to the next step.
9 | INSPECT MAIN RELAY POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND • Turn the ignition switch off. • Remove the main relay. • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between main relay terminal E (wiring harness-side) and body ground. • Is the voltage B+? | Yes | Go to the next step.
No | Inspect the ETV 10 A fuse. If the fuse is melt: • Repair or replace the wiring harness for a possible short to ground, then replace the fuse. If the fuse is deterioration: • Replace the fuse. If the fuse is normal: • Repair or replace the wiring harness for a possible open circuit. Go to Step 22.
10 | INSPECT MAIN RELAY CIRCUITS FOR SHORT TO GROUND • Main relay is removed. • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― PCM terminal 1BE ― PCM terminal 1Q • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the PCM terminal 1BE was shorted to ground: • Replace the EGI COMP2 10 A fuse, if necessary. Go to Step 22.
No | Go to the next step.
11 | INSPECT MAIN RELAY CIRCUITS FOR OPEN CIRCUIT • Main relay is removed and PCM connector is disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Main relay terminal C and PCM terminal 1BE ― Main relay terminal A and PCM terminal 1Q • Is there continuity? | Yes | Go to Step 22.
No | Repair or replace the wiring harness for a possible open circuit, then go to Step 22.
12 | INSPECT DRIVE-BY-WIRE RELAY OUTPUT VOLTAGE • Measure the voltage between PCM terminal 1BF (wiring harness-side) and body ground. • Is the voltage B+? | Yes | Go to Step 16.
No | Go to the next step.
13 | INSPECT DRIVE-BY-WIRE RELAY POWER SUPPLY CIRCUITS FOR OPEN CIRCUIT • Turn the ignition switch off. • Remove the drive-by-wire relay. • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between the following terminals (wiring harness-side) and body ground: ― Drive-by-wire relay terminal C ― Drive-by-wire relay terminal E • Is the voltage B+? | Yes | Go to the next step.
No | Repair or replace the wiring harness for a possible open circuit, then go to Step 22.
14 | INSPECT DRIVE-BY-WIRE RELAY CIRCUITS FOR SHORT TO GROUND • Drive-by-wire relay is removed. • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― PCM terminal 1BF ― PCM terminal 1AX • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground, then go to Step 22.
No | Go to the next step.
15 | INSPECT DRIVE-BY-WIRE RELAY CIRCUITS FOR OPEN CIRCUIT • Drive-by-wire relay is removed and PCM connector is disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Drive-by-wire relay terminal D and PCM terminal 1BF ― Drive-by-wire relay terminal A and PCM terminal 1AX • Is there continuity? | Yes | Go to Step 22.
No | Repair or replace the wiring harness for a possible open circuit, then go to Step 22.
16 | INSPECT THROTTLE BODY CONNECTOR AND TERMINALS • Turn the ignition switch off. • Disconnect the throttle body connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or replace the connector or terminals, then go to Step 22.
No | Go to the next step.
17 | INSPECT TP SENSOR NO.1/NO.2 CIRCUITS FOR SHORT TO GROUND • Throttle body connector is disconnected. • Disconnect the PCM connector. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Throttle body terminal E ― Throttle body terminal F ― Throttle body terminal D • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground, then go to Step 22.
No | Go to the next step.
18 | INSPECT TP SENSOR NO.1/NO.2 CIRCUIT FOR SHORT TO EACH OTHER • Throttle body and PCM connectors are disconnected. • Inspect for continuity between throttle body terminal E, F, C and D (wiring harness-side). • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to each other, then go to Step 22.
No | Go to the next step.
19 | INSPECT TP SENSOR NO.1/NO.2 CIRCUITS FOR SHORT TO POWER SUPPLY • Throttle body and PCM connectors are disconnected. • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between the following terminals (wiring harness-side) and body ground: ― Throttle body terminal F ― Throttle body terminal D • Is there any voltage? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 22.
No | Go to the next step.
20 | INSPECT TP SENSOR NO.1/NO.2 CIRCUIT FOR OPEN CIRCUIT • Throttle body and PCM connectors are disconnected. • Turn the ignition switch off. • Inspect for continuity between the following terminals (wiring harness-side): ― Throttle body terminal E and PCM terminal 2AO ― Throttle body terminal F and PCM terminal 2AK ― Throttle body terminal C and PCM terminal 2AP ― Throttle body terminal D and PCM terminal 2AL • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness for a possible open circuit, then go to Step 22.
21 | INSPECT TP SENSOR NO.1/NO.2 • Reconnect the throttle body connector. • Inspect the TP sensor No.1/No.2. (See THROTTLE POSITION (TP) SENSOR INSPECTION [L8, LF].) • Is there any malfunction? | Yes | Replace the throttle body, then go to the next step. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L8, LF].)
No | Go to the next step.
22 | VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the ignition switch to the ON position (engine off). • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L8, LF].) • Start the engine and warm it up completely. • Turn the ignition switch off, then to the ON position (engine off). • Perform the KOER self test. (See KOEO/KOER SELF TEST [L8, LF].) • Is the same DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L8, LF].)
No | Go to the next step.
23 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L8, LF].) • Are any DTCs present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE [L8, LF].)
No | DTC troubleshooting completed.