DTC P2146:00 [SKYACTIV-D 2.2]

id0102s4152500

DTC P2146:00

Fuel injector No.1 and No.4 circuit abnormal operation

DETECTION CONDITION

•  When the following condition is met, the PCM detects the control current at fuel injectors No.1 and No.4 as less than the specified value 6 times:

MONITORING CONDITIONS

―  Battery voltage: more than 8 V

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.

•  Inhibits the EGR control.

•  Inhibits the diesel particulate filter regeneration control.

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

•  PCM restricts engine-transaxle integration control.

POSSIBLE CAUSE

•  Fuel injector No.1 connector or terminals malfunction

•  Fuel injector No.4 connector or terminals malfunction

•  PCM connector or terminals malfunction

•  Open circuit in wiring harness between the following terminals:

―  Fuel injector No.1 terminal A—PCM terminal 1EA

―  Fuel injector No.4 terminal A—PCM terminal 1DW

•  Fuel injector No.1 malfunction

•  Fuel injector No.4 malfunction

•  PCM malfunction

DTC P2146:00	Fuel injector No.1 and No.4 circuit abnormal operation
DETECTION CONDITION	• When the following condition is met, the PCM detects the control current at fuel injectors No.1 and No.4 as less than the specified value 6 times: MONITORING CONDITIONS ― Battery voltage: more than 8 V 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. • Inhibits the EGR control. • Inhibits the diesel particulate filter regeneration control. • Inhibits engine-stop by operating the i-stop function. • PCM restricts engine-transaxle integration control.
POSSIBLE CAUSE	• Fuel injector No.1 connector or terminals malfunction • Fuel injector No.4 connector or terminals malfunction • PCM connector or terminals malfunction • Open circuit in wiring harness between the following terminals: ― Fuel injector No.1 terminal A—PCM terminal 1EA ― Fuel injector No.4 terminal A—PCM terminal 1DW • Fuel injector No.1 malfunction • Fuel injector No.4 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 INJECTOR NO.1 CONNECTOR CONDITION • Switch the ignition off. • Disconnect the fuel injector No.1 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 FUEL INJECTOR NO.4 CONNECTOR CONDITION • Disconnect the fuel injector No.4 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 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.
5		No	Go to the next step.
6	INSPECT FUEL INJECTOR CIRCUIT FOR OPEN CIRCUIT • Verify that the fuel injector No.1, fuel injector No.4 and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Fuel injector No.1 terminal A—PCM terminal 1EA ― Fuel injector No.4 terminal A—PCM terminal 1DW • Is there continuity?	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 injector No.1 terminal A—PCM terminal 1EA • Fuel injector No.4 terminal A—PCM terminal 1DW 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.
7	INSPECT FUEL INJECTOR NO.1 • Inspect the fuel injector No.1. (See FUEL INJECTOR INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the fuel injector No.1, then go to Step 9. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7		No	Go to the next step.
8	INSPECT FUEL INJECTOR NO.4 • Inspect the fuel injector No.4. (See FUEL INJECTOR INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the fuel injector No.4, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
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 AFTER REPAIR PROCEDURE [SKYACTIV-D 2.2].) • Perform the KOER self test. (See KOEO/KOER SELF 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.
9		No	Go to the next step.
10	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].)
10		No	DTC troubleshooting completed.