DTC P0671:00 [SKYACTIV-D 2.2]

id0102s4213300

DTC P0671:00

Glow plug No.1 control circuit problem

DETECTION CONDITION

•  If the input voltage is below 0.067 V for 5 s, the PCM determines that the glow plug No.1 circuit problem.

MONITORING CONDITIONS

―  0.5 s have elapsed after ignition was switched ON. (engine off or on)

―  During glow control

―  Duty value of the glow plug is 8 to 96 % for 1 s or more.

―  Battery voltage: 8—20 V

―  The following DTC is not detected:

•  LIN communication system: U0106:00

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 (Mode 2)/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

•  Glow plug No.1 connector or terminals malfunction

•  Glow control module connector or terminals malfunction

•  Open circuit in wiring harness between glow plug No.1 terminal A and glow control module terminal 1B

•  Short to ground in wiring harness between glow plug No.1 terminal A and glow control module terminal 1B

•  Short to power supply in wiring harness between glow plug No.1 terminal A and glow control module terminal 1B

•  PCM connector or terminals malfunction

•  Glow plug No.1 malfunction

•  Glow control module malfunction

•  PCM malfunction

DTC P0671:00	Glow plug No.1 control circuit problem
DETECTION CONDITION	• If the input voltage is below 0.067 V for 5 s, the PCM determines that the glow plug No.1 circuit problem. MONITORING CONDITIONS ― 0.5 s have elapsed after ignition was switched ON. (engine off or on) ― During glow control ― Duty value of the glow plug is 8 to 96 % for 1 s or more. ― Battery voltage: 8—20 V ― The following DTC is not detected: • LIN communication system: U0106:00 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 (Mode 2)/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• Glow plug No.1 connector or terminals malfunction • Glow control module connector or terminals malfunction • Open circuit in wiring harness between glow plug No.1 terminal A and glow control module terminal 1B • Short to ground in wiring harness between glow plug No.1 terminal A and glow control module terminal 1B • Short to power supply in wiring harness between glow plug No.1 terminal A and glow control module terminal 1B • PCM connector or terminals malfunction • Glow plug No.1 malfunction • Glow control module 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 GLOW PLUG NO.1 CONNECTOR CONDITION • Switch the ignition off. • Disconnect the glow plug 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 11.
3		No	Go to the next step.
4	INSPECT GLOW CONTROL MODULE CONNECTOR CONDITION • Disconnect the glow control module 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 11.
4		No	Go to the next step.
5	INSPECT GLOW PLUG NO.1 CONTROL CIRCUIT FOR OPEN CIRCUIT • Verify that the glow plug No.1 and glow control module connectors are disconnected. • Inspect for continuity between glow plug No.1 terminal A (wiring harness-side) and glow control module terminal 1B (wiring harness-side). • 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 glow plug No.1 terminal A and glow control module terminal 1B. 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 11.
6	INSPECT GLOW PLUG NO.1 CONTROL CIRCUIT FOR SHORT TO GROUND • Verify that the glow plug No.1 and glow control module connectors are disconnected. • Inspect for continuity between glow plug No.1 terminal A (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between glow plug No.1 terminal A and glow control module terminal 1B. 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 11.
6		No	Go to the next step.
7	INSPECT GLOW PLUG NO.1 CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the glow plug No.1 and glow control module connectors are disconnected. • Switch the ignition ON (engine off). • Measure the voltage at the glow plug No.1 terminal A (wiring harness-side). • Is the voltage 0 V?	Yes	Go to the next step.
7		No	Refer to the wiring diagram and verify whether or not there is a common connector between glow plug No.1 terminal A and glow control module terminal 1B. 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 11.
8	INSPECT PCM CONNECTOR CONDITION • Switch the ignition off. • 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 11.
8		No	Go to the next step.
9	INSPECT GLOW PLUG NO.1 • Inspect the glow plug No.1. (See GLOW PLUG INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the glow plug No.1, then go to Step 11. (See GLOW PLUG REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
9		No	Go to the next step.
10	INSPECT GLOW CONTROL MODULE • Inspect the glow control module. (See GLOW PLUG CONTROL MODULE INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the glow control module, then go to the next step. (See GLOW PLUG CONTROL MODULE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
10		No	Go to the next step.
11	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 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.
11		No	Go to the next step.
12	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].)
12		No	DTC troubleshooting completed.