DTC P009B:00 [SKYACTIV-D 2.2]

id0102s4211100

DTC P009B:00

Fuel pressure relief valve signal circuit problem

DETECTION CONDITION

•  The operation amount of the fuel pressure relief valve drive current control switch is not within the specified range when all of the following conditions are met.

MONITORING CONDITIONS

―  Battery voltage: 10—16 V

―  Fuel pressure relief valve: During operation

•  The fuel pressure relief valve drive circuit downstream voltage is the specified value or less when all of the following conditions are met.

MONITORING CONDITIONS

―  Battery voltage: 10—16 V

―  Fuel pressure relief valve: Stopped (while closed)

Diagnostic support note

•  This is an intermittent monitor (fuel system).

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

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  PCM restricts engine torque.

•  PCM restricts fuel pressure. (high pressure side).

•  Inhibits engine-stop by operating the i-stop function.

POSSIBLE CAUSE

•  Fuel pressure relief valve connector or terminals malfunction

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

―  Fuel pressure relief valve terminal A—PCM terminal 1DK

―  Fuel pressure relief valve terminal B—PCM terminal 1DG

•  PCM connector or terminals malfunction

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

―  Fuel pressure relief valve terminal A—PCM terminal 1DK

―  Fuel pressure relief valve terminal B—PCM terminal 1DG

•  Fuel pressure relief valve circuits are shorted to each other

•  Open circuit in wiring harness between the following terminals:

―  Fuel pressure relief valve terminal A—PCM terminal 1DK

―  Fuel pressure relief valve terminal B—PCM terminal 1DG

•  Fuel pressure relief valve malfunction

•  PCM malfunction

DTC P009B:00	Fuel pressure relief valve signal circuit problem
DETECTION CONDITION	• The operation amount of the fuel pressure relief valve drive current control switch is not within the specified range when all of the following conditions are met. MONITORING CONDITIONS ― Battery voltage: 10—16 V ― Fuel pressure relief valve: During operation • The fuel pressure relief valve drive circuit downstream voltage is the specified value or less when all of the following conditions are met. MONITORING CONDITIONS ― Battery voltage: 10—16 V ― Fuel pressure relief valve: Stopped (while closed) Diagnostic support note • This is an intermittent monitor (fuel system). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• PCM restricts engine torque. • PCM restricts fuel pressure. (high pressure side). • Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE	• Fuel pressure relief valve connector or terminals malfunction • Short to ground in wiring harness between the following terminals: ― Fuel pressure relief valve terminal A—PCM terminal 1DK ― Fuel pressure relief valve terminal B—PCM terminal 1DG • PCM connector or terminals malfunction • Short to power supply in wiring harness between the following terminals: ― Fuel pressure relief valve terminal A—PCM terminal 1DK ― Fuel pressure relief valve terminal B—PCM terminal 1DG • Fuel pressure relief valve circuits are shorted to each other • Open circuit in wiring harness between the following terminals: ― Fuel pressure relief valve terminal A—PCM terminal 1DK ― Fuel pressure relief valve terminal B—PCM terminal 1DG • Fuel pressure relief valve 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.
1		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.
2		No	Go to the next step.
3	INSPECT FUEL PRESSURE RELIEF VALVE CONNECTOR CONDITION • Switch the ignition off. • Disconnect the fuel pressure relief 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 10.
3		No	Go to the next step.
4	INSPECT FUEL PRESSURE RELIEF VALVE CIRCUIT FOR SHORT TO GROUND • Verify that the fuel pressure relief valve connector is disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Fuel pressure relief valve terminal A ― Fuel pressure relief valve terminal B • Is there continuity?	Yes	If the short to ground circuit could be detected in the wiring harness: • Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: ― Fuel pressure relief valve terminal A—PCM terminal 1DK ― Fuel pressure relief valve terminal B—PCM terminal 1DG 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. If the short to ground circuit could not be detected in the wiring harness: • Replace the PCM (short to ground in the PCM internal circuit). (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) Go to Step 10.
4		No	Go to the next step.
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.
5		No	Go to the next step.
6	INSPECT FUEL PRESSURE RELIEF VALVE CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the fuel pressure relief valve and PCM connectors are disconnected. • Switch the ignition ON (engine off). • Measure the voltage at the following terminals (wiring harness-side): ― Fuel pressure relief valve terminal A ― Fuel pressure relief valve terminal B • Is the voltage 0 V?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Fuel pressure relief valve terminal A—PCM terminal 1DK • Fuel pressure relief valve terminal B—PCM terminal 1DG 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 power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 10.
7	INSPECT FUEL PRESSURE RELIEF VALVE CIRCUITS FOR SHORT TO EACH OTHER • Verify that the fuel pressure relief valve and PCM connectors are disconnected. • Switch the ignition off. • Inspect for continuity between fuel pressure relief valve terminals A and B (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: • Fuel pressure relief valve terminal A—PCM terminal 1DK • Fuel pressure relief valve terminal B—PCM terminal 1DG 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 10.
7		No	Go to the next step.
8	INSPECT FUEL PRESSURE RELIEF VALVE CIRCUIT FOR OPEN CIRCUIT • Verify that the fuel pressure relief valve and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Fuel pressure relief valve terminal A—PCM terminal 1DK ― Fuel pressure relief valve terminal B—PCM terminal 1DG • Is there continuity?	Yes	Go to the next step.
8		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Fuel pressure relief valve terminal A—PCM terminal 1DK • Fuel pressure relief valve terminal B—PCM terminal 1DG 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 10.
9	INSPECT FUEL PRESSURE RELIEF VALVE • Inspect the fuel pressure relief valve. (See FUEL PRESSURE RELIEF VALVE INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the common rail, then go to the next step. (See COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
9		No	Go to the next step.
10	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [SKYACTIV-D 2.2].) • Start the engine. • Repeat deceleration 10 times using engine braking after accelerating the vehicle speed to 60 km/h {37 mph}. • Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].) • 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 2.2].) Go to the next step.
10		No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [SKYACTIV-D 2.2].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-D 2.2].)
11		No	DTC troubleshooting completed.