DTC P048D:00 [SKYACTIV-D 1.5]

id0102q2856200

DTC P048D:00

Exhaust shutter valve position sensor circuit low input

DETECTION CONDITION

•  If the input voltage at the PCM terminal 1AL is less than 0.19 V for 5 s, the PCM determines that the exhaust shutter valve position sensor circuit has a malfunction.

MONITORING CONDITIONS

―  Battery voltage: 8—20 V

―  0.5 s have elapsed after ignition was switched on.

―  PCM internal processor malfunction DTC P0606:00 not detected.

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

•  PCM restricts engine torque

•  Inhibits the EGR control

POSSIBLE CAUSE

•  Exhaust shutter valve connector or terminals malfunction

•  PCM connector or terminals malfunction

•  Open circuit in wiring harness between the following terminals:

―  Exhaust shutter valve terminal A—PCM terminal 1AK

―  Exhaust shutter valve terminal B—PCM terminal 1AL

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

―  Exhaust shutter valve terminal A—PCM terminal 1AK

―  Exhaust shutter valve terminal B—PCM terminal 1AL

•  Exhaust shutter valve position sensor signal circuit and ground circuit are shorted to each other

•  Exhaust shutter valve position sensor (built-into exhaust shutter valve) malfunction

•  PCM malfunction

DTC P048D:00	Exhaust shutter valve position sensor circuit low input
DETECTION CONDITION	• If the input voltage at the PCM terminal 1AL is less than 0.19 V for 5 s, the PCM determines that the exhaust shutter valve position sensor circuit has a malfunction. MONITORING CONDITIONS ― Battery voltage: 8—20 V ― 0.5 s have elapsed after ignition was switched on. ― PCM internal processor malfunction DTC P0606:00 not detected. 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	• PCM restricts engine torque • Inhibits the EGR control
POSSIBLE CAUSE	• Exhaust shutter valve connector or terminals malfunction • PCM connector or terminals malfunction • Open circuit in wiring harness between the following terminals: ― Exhaust shutter valve terminal A—PCM terminal 1AK ― Exhaust shutter valve terminal B—PCM terminal 1AL • Short to ground in wiring harness between the following terminals: ― Exhaust shutter valve terminal A—PCM terminal 1AK ― Exhaust shutter valve terminal B—PCM terminal 1AL • Exhaust shutter valve position sensor signal circuit and ground circuit are shorted to each other • Exhaust shutter valve position sensor (built-into exhaust shutter valve) malfunction • PCM malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the FREEZE FRAME DATA/snapshot data on the repair order.	—	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.
2		No	Go to the next step.
3	INSPECT EXHAUST SHUTTER VALVE CONNECTOR CONDITION • Switch the ignition off. • Disconnect the exhaust shutter valve 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 9.
3		No	Go to the next step.
4	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 9.
4		No	Go to the next step.
5	INSPECT EXHAUST SHUTTER VALVE POSITION SENSOR CIRCUIT FOR OPEN CIRCUIT • Verify that the exhaust shutter valve and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Exhaust shutter valve terminal A—PCM terminal 1AK ― Exhaust shutter valve terminal B—PCM terminal 1AL • Is there continuity?	Yes	Go to the next step.
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Exhaust shutter valve terminal A—PCM terminal 1AK • Exhaust shutter valve terminal B—PCM terminal 1AL If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 9.
6	INSPECT EXHAUST SHUTTER VALVE POSITION SENSOR CIRCUIT FOR SHORT TO GROUND • Verify that the exhaust shutter valve and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Exhaust shutter valve terminal A ― Exhaust shutter valve terminal B • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Exhaust shutter valve terminal A—PCM terminal 1AK • Exhaust shutter valve terminal B—PCM terminal 1AL If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 9.
6		No	Go to the next step.
7	INSPECT EXHAUST SHUTTER VALVE POSITION SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER • Verify that the exhaust shutter valve and PCM connectors are disconnected. • Inspect for continuity between exhaust shutter valve terminals B and C (wiring harness-side). • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Exhaust shutter valve terminal B—PCM terminal 1AL • Exhaust shutter valve terminal C—PCM terminal 1AM If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to each other. Go to Step 9.
7		No	Go to the next step.
8	INSPECT EXHAUST SHUTTER VALVE POSITION SENSOR • Reconnect all disconnected connectors. • Inspect the exhaust shutter valve position sensor. (See EXHAUST SHUTTER VALVE POSITION SENSOR INSPECTION [SKYACTIV-D 1.5].) • Is there any malfunction?	Yes	Inspect the exhaust shutter valve, then go to the next step. (See EXHAUST SHUTTER VALVE INSPECTION [SKYACTIV-D 1.5].)
8		No	Go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [SKYACTIV-D 1.5].) • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [SKYACTIV-D 1.5].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].) Go to the next step.
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [SKYACTIV-D 1.5].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-D 1.5].)
10		No	DTC troubleshooting completed.