DTC P2AA5:00 [PCM (SKYACTIV-D 2.2)]

DTC P2AA5:00	EGR cooler bypass valve control: Drive circuit malfunction
DETECTION CONDITION	• The following conditions are met: ― The EGR cooler bypass valve drive current exceeds the specification or the drive circuit temperature exceeds 170 °C for a continuous 3 s when the following conditions are met. • Battery positive voltage: 8—16 V • 0.5 s elapses after engine is started Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Limits engine torque. • Inhibits the automatic diesel particulate filter regeneration control. • Inhibits the manual diesel particulate filter regeneration control. • Inhibits the EGR control. • Inhibits engine-stop by i-stop control.
POSSIBLE CAUSE	• EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminal malfunction • Short to ground in wiring harness between the following terminals: ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC • PCM connector or terminal malfunction • Short to power supply in wiring harness between the following terminals ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC • EGR cooler bypass valve malfunction • PCM malfunction • EGR cooler bypass valve stuck

DTC P2AA5:00

EGR cooler bypass valve control: Drive circuit malfunction

DETECTION CONDITION

• The following conditions are met:

― The EGR cooler bypass valve drive current exceeds the specification or the drive circuit temperature exceeds 170 °C for a continuous 3 s when the following conditions are met.

• Battery positive voltage: 8—16 V

• 0.5 s elapses after engine is started

Diagnostic support note

• This is a continuous monitor (CCM).

• The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA/Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Limits engine torque.

• Inhibits the automatic diesel particulate filter regeneration control.

• Inhibits the manual diesel particulate filter regeneration control.

• Inhibits the EGR control.

• Inhibits engine-stop by i-stop control.

POSSIBLE CAUSE

• EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminal malfunction

• Short to ground in wiring harness between the following terminals:

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

• PCM connector or terminal malfunction

• Short to power supply in wiring harness between the following terminals

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

• EGR cooler bypass valve malfunction

• PCM malfunction

• EGR cooler bypass valve stuck

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the freeze frame data/snap shot data.	—	Go to the next step.
2	INSPECT EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
No	Repair or replace the connector, then go to Step 8.
3	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
No	Repair or replace the connector, then go to Step 8.
4	INSPECT EGR COOLER BYPASS VALVE CIRCUIT FOR SHORT TO GROUND • Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector is disconnected. • Inspect for continuity between the following terminals (vehicle wiring harness side) and ground. ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the wiring harness which is shorted to ground. Go to Step 8.
No	Go to the next step.
5	INSPECT EGR VALVE CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected. • Switch the ignition ON (engine off). • Measure the voltage at the following terminals (vehicle wiring harness side). ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E ― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A • Is the voltage 0 V?	Yes	Go to the next step.
No	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH • EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the wiring harness which is shorted to the power supply. Go to Step 8.
6	EGR COOLER BYPASS VALVE INSPECTION • Inspect the EGR cooler bypass valve. • Is the EGR cooler bypass valve normal?	Yes	Go to the next step.
No	Replace the EGR cooler bypass valve, then go to the next step.
7	INSPECT COOLER BYPASS VALVE CONTROL • Using the simulation function, change the EGR_C_BP value (%) and verify that the EGR_C_BP_ACT values comply. • Does the EGR_C_BP_ACT value comply?	Yes	Go to the next step.
No	Replace the EGR cooler bypass valve, then go to the next step.
8	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. • Start the engine and drive the vehicle under the freeze frame data/snapshot data condition. Warning • To prevent an accident, work with another person when the vehicle is being driven (one person drives vehicle, other person operates M-MDS). • Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured. • Display the DTCs using the M-MDS. •	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step.
No	Go to the next step.
9	VERIFY OTHER DTCs • Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

Step

Inspection

Results

Action

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

• Recording can be facilitated using the screen capture function of the PC.

• Record the freeze frame data/snap shot data.

—

Go to the next step.

INSPECT EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION

• Switch the ignition OFF.

• Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector.

• Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

Repair or replace the connector, then go to Step 8.

INSPECT PCM CONNECTOR CONDITION

• Disconnect the PCM connector.

• Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

Repair or replace the connector, then go to Step 8.

INSPECT EGR COOLER BYPASS VALVE CIRCUIT FOR SHORT TO GROUND

• Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector is disconnected.

• Inspect for continuity between the following terminals (vehicle wiring harness side) and ground.

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A

• Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

• EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

• EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

If there is a common connector:

― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.

― Repair or replace the malfunctioning location.

If there is no common connector:

― Repair or replace the wiring harness which is shorted to ground.

Go to Step 8.

Go to the next step.

INSPECT EGR VALVE CIRCUIT FOR SHORT TO POWER SUPPLY

• Verify that the EGR cooler bypass valve/EGR cooler bypass valve position sensor connector and the PCM connector are disconnected.

• Switch the ignition ON (engine off).

• Measure the voltage at the following terminals (vehicle wiring harness side).

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E

― EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A

• Is the voltage 0 V?

Yes

Go to the next step.

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

• EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal E and PCM terminal 1BH

• EGR cooler bypass valve/EGR cooler bypass valve position sensor terminal A and PCM terminal 1BC

If there is a common connector:

― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location.

― Repair or replace the malfunctioning location.

If there is no common connector:

― Repair or replace the wiring harness which is shorted to the power supply.

Go to Step 8.

EGR COOLER BYPASS VALVE INSPECTION

• Inspect the EGR cooler bypass valve.

• Is the EGR cooler bypass valve normal?

Yes

Go to the next step.

Replace the EGR cooler bypass valve, then go to the next step.

INSPECT COOLER BYPASS VALVE CONTROL

• Using the simulation function, change the EGR_C_BP value (%) and verify that the EGR_C_BP_ACT values comply.

• Does the EGR_C_BP_ACT value comply?

Yes

Go to the next step.

Replace the EGR cooler bypass valve, then go to the next step.

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

• Reconnect all the disconnected connectors.

• Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.

• Start the engine and drive the vehicle under the freeze frame data/snapshot data condition.

Warning

• To prevent an accident, work with another person when the vehicle is being driven (one person drives vehicle, other person operates M-MDS).

• Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured.

• Display the DTCs using the M-MDS.

•

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM, then go to the next step.

Go to the next step.

VERIFY OTHER DTCs

• Has any other DTC or pending code been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

DTC troubleshooting completed.