DTC P2101

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.
1		No	Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE BULLETINS AVAILABILITY Verify related Service Bulletins availability. Is any related Service Bulletins available?	Yes	Perform the repair or diagnosis according to the available Service Bulletins. If the vehicle is not repaired, go to the next step.
2		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). Verify related PENDING CODE and stored DTC. Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
3		No	Go to the next step.
4	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2) Is the DTC P2101 on FREEZE FRAME DATA (Mode 2)?	Yes	Go to the next step.
4		No	Go to the troubleshooting procedures for DTC on FREEZE FRAME DATA (Mode 2). (See DTC TABLE ).
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.
5		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 pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 22.
6		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.
7		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 1 BE (wiring harness-side) and body ground. Is the voltage B+ ?	Yes	Go to Step 12.
8		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.
9		No	Inspect the main relay power supply circuit related fuse. If the fuse is melt: Repair or replace the wiring harness for a possible short to ground. 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 1 BE PCM terminal 1Q Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 22.
10		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.
11		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.
12		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.
13		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 1 AX Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 22.
14		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.
15		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.
16		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.
17		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.
18		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.
19		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.
20		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 ). Is there any malfunction?	Yes	Replace the throttle body, then go to the next step. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION ).
21		No	Go to the next step.
22	VERIFY TROUBLESHOOTING OF DTC P2101 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. Start the engine and idle it. Turn the ignition switch off, then to the ON position (Engine off). Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
22		No	Go to the next step.
23	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
23		No	DTC troubleshooting completed.