DTC P2146:00 [SKYACTIV-D 1.5]

id0102q2152500

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 0.67 A value for continuous 8 times.

MONITORING CONDITIONS

―  During engine running

―  Battery voltage: 8 V or more

―  2 s or more have elapsed since PCM launch

―  During fuel injection control

―  The following DTCs are not detected:

•  PCM internal processor malfunction: P0606:00

•  Internal PCM malfunction: P062B:00

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.

•  Inhibits the auto DPF regeneration control.

•  Inhibits the compulsory DPF regeneration control.

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

•  PCM restricts engine-transaxle integration control. (ATX)

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.1 terminal B—PCM terminal 1EE

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

―  Fuel injector No.4 terminal B—PCM terminal 1EF

•  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 0.67 A value for continuous 8 times. MONITORING CONDITIONS ― During engine running ― Battery voltage: 8 V or more ― 2 s or more have elapsed since PCM launch ― During fuel injection control ― The following DTCs are not detected: • PCM internal processor malfunction: P0606:00 • Internal PCM malfunction: P062B:00 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. • Inhibits the auto DPF regeneration control. • Inhibits the compulsory DPF regeneration control. • Inhibits engine-stop by operating the i-stop function. • PCM restricts engine-transaxle integration control. (ATX)
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.1 terminal B—PCM terminal 1EE ― Fuel injector No.4 terminal A—PCM terminal 1DW ― Fuel injector No.4 terminal B—PCM terminal 1EF • Fuel injector No.1 malfunction • Fuel injector No.4 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 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.1 terminal B—PCM terminal 1EE ― Fuel injector No.4 terminal A—PCM terminal 1DW ― Fuel injector No.4 terminal B—PCM terminal 1EF • 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.1 terminal B—PCM terminal 1EE • Fuel injector No.4 terminal A—PCM terminal 1DW • Fuel injector No.4 terminal B—PCM terminal 1EF 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 1.5].) • Is there any malfunction?	Yes	Replace the fuel injector No.1, then go to Step 9. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
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 1.5].) • Is there any malfunction?	Yes	Replace the fuel injector No.4, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [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 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.