DTC P2101:00 [L5]SM2444244
DTC P2101:00 [L5]

id0102c9707700

DTC P2101:00

Throttle valve actuator circuit range/performance problem
DETECTION CONDITION
• The PCM turns the main relay on but the input voltage is 4 V or less, the PCM determines that the main relay control circuit voltage is low.
• The PCM monitors the input voltage from the main relay. The PCM turns the main relay off but the input voltage is 4 V or more, the PCM determines that the main 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 condition during the first drive cycle.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
• The DTC is stored in the PCM memory.
POSSIBLE CAUSE
• Main relay malfunction
• Short to ground or open circuit in main relay power supply circuit
― Short to ground in wiring harness between the following terminals:
• Battery positive terminal—Main relay terminal 3
• Battery positive terminal—Main relay terminal 1
― ENGINE 30 A fuse malfunction
― Open circuit in wiring harness between the following terminals:
• Battery positive terminal—Main relay terminal 3
• Battery positive terminal—Main relay terminal 1
• PCM connector or terminals malfunction
• Short to power supply in wiring harness between the following terminals:
― Main relay terminal 5—PCM terminal 1B
― Main relay terminal 5—PCM terminal 1A
• Short to ground or open circuit in main relay circuit
― Short to ground in wiring harness between the following terminals:
• Main relay terminal 5—PCM terminal 1B
• Main relay terminal 5—PCM terminal 1A
• Main relay terminal 2—PCM terminal 1Q
― ECM 10 A fuse malfunction
― Open circuit in wiring harness between the following terminals:
• Main relay terminal 5—PCM terminal 1B
• Main relay terminal 5—PCM terminal 1A
• Main relay terminal 2—PCM terminal 1Q
• TP sensor No.1 and related circuit malfunction
• TP sensor No.2 and related circuit malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data 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
INSPECT MAIN RELAY
• Turn the ignition switch off.
• Remove the main relay.
• Inspect the main relay. (See RELAY INSPECTION [L5].)
• Is there any malfunction?
Yes
Replace the main relay, then go to Step 10.
No
Go to the next step.
4
INSPECT MAIN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
• Main relay is removed.
• Measure the voltage at the following terminals (wiring harness-side):
― Main relay terminal 3
― Main relay terminal 1
• Is the voltage B+?
Yes
Go to the next step.
No
Inspect the ENGINE 30 A 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 10.
5
INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
6
INSPECT MAIN RELAY CIRCUIT FOR SHORT TO POWER SUPPLY
• Main relay is removed.
• PCM connector is disconnected.
• Turn the ignition switch to the ON position (engine off).
• Measure the voltage at the main relay terminal 5 (wiring harness-side).
• Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 10.
No
Go to the next step.
7
INSPECT MAIN RELAY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
• Main relay is removed.
• PCM connector is disconnected.
• Turn the ignition switch off.
• Install the main relay.
• Turn the ignition switch to the ON position (engine off).
• Measure the voltage at the following terminals (wiring harness-side):
― PCM terminal 1B
― PCM terminal 1A
― PCM terminal 1Q
• Is the voltage normal? (See PCM INSPECTION [L5].)
Yes
Go to the next step.
No
If the PCM terminal 1A and/or 1B voltage is abnormal:
• Inspect the ECM 10 A fuse.
― If the fuse is melt:
• Repair or replace the wiring harness for a possible short to ground.
• Replace the malfunctioning fuse.
― If the fuse is deterioration:
• Replace the malfunctioning fuse.
― If the fuse is normal:
• Repair or replace the wiring harness for a possible open circuit.
If the PCM terminal 1Q voltage is abnormal:
• Repair or replace the wiring harness for a possible short or open circuit.
Go to Step 10.
8
INSPECT TP SENSOR NO.1 OUTPUT VOLTAGE
• PCM connector is disconnected.
• Measure the voltage at the PCM terminal 2AK (wiring harness-side).
• Is the voltage normal? (See PCM INSPECTION [L5].)
Yes
Go to the next step.
No
Inspect the TP sensor No.1 and related circuits and terminals.
(See THROTTLE POSITION (TP) SENSOR INSPECTION [L5].)
Repair or replace the malfunctioning part according to the inspection results, then go to Step 10.
9
INSPECT TP SENSOR NO.2 OUTPUT VOLTAGE
• PCM connector is disconnected.
• Measure the voltage at the PCM terminal 2AL (wiring harness-side).
• Is the voltage normal? (See PCM INSPECTION [L5].)
Yes
Go to the next step.
No
Inspect the TP sensor No.2 and related circuits and terminals.
(See THROTTLE POSITION (TP) SENSOR INSPECTION [L5].)
Repair or replace the malfunctioning part according to the inspection results, then go to the next step.
10
VERIFY DTC TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L5].)
• Perform the KOER self test. (See KOEO/KOER SELF TEST [L5].)
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [L5].)
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L5].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [L5].)
No
DTC troubleshooting completed.