DTC P0670:00 [PCM (SKYACTIV-D 2.2)]

id0102j5067000

DTC P0670:00	Glow control module control circuit problem
DETECTION CONDITION	•  When the following conditions are met, a condition continues for 5 s in which the power supply voltage of the glow control module is less than 5.8 V or exceeds 16.5 V, or there is an internal circuit malfunction, or the temperature of the internal circuit exceeds the specification. ―  During glow control (Fuel injector (6 pin type)) ―  Glow plug circuit voltage: 3—11.3 V ―  Battery voltage: 8—16 V (Fuel injector (2 pin type)) ―  0.5 s have elapsed after ignition is switched ON (engine on) (Fuel injector (2 pin type)) ―  The following DTCs are not detected (Fuel injector (2 pin type)) •  LIN communication system: P0106:00 Diagnostic support note •  This is a continuous monitor (other). •  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	Not applicable
POSSIBLE CAUSE	•  Glow control module connector or terminal malfunction •  Short to ground or open circuit in glow control module power supply circuit ―  Short to ground in wiring harness between battery positive terminal and glow control module terminal F ―  GLOW 80 A fuse malfunction ―  Open circuit in wiring harness between positive battery terminal and glow control module terminal F •  Short to ground or open circuit in glow control module power supply circuit ―  Short to ground in the wiring harness between main relay terminal C and glow control module terminal H ―  ENGINE1 15 A fuse malfunction ―  Open circuit in wiring harness between main relay terminal C and glow control module terminal H •  Open circuit in wiring harness between glow control module terminal E and ground •  Glow plug connector or terminal malfunction •  Short to ground in wiring harness between the following terminals: ―  Glow control module terminal I and glow plug No.1 terminal A ―  Glow control module terminal G and glow plug No.2 terminal B ―  Glow control module terminal D and glow plug No.3 terminal C ―  Glow control module terminal A and glow plug No.4 terminal D •  Short to power supply in wiring harness between the following terminals ―  Glow control module terminal I and glow plug No.1 terminal A ―  Glow control module terminal G and glow plug No.2 terminal B ―  Glow control module terminal D and glow plug No.3 terminal C ―  Glow control module terminal A and glow plug No.4 terminal D •  Short circuit in each wiring harness of glow plugs •  Short to ground in wiring harness between glow control module terminal C and PCM terminal 2G •  PCM connector or terminal malfunction •  Short to power supply in wiring harness between glow control module terminal C and PCM terminal 2G •  Open circuit in wiring harness between glow control module terminal C and PCM terminal 2G •  Glow control module temperature is too high (123 °C {253 °F} or more) •  Glow control module malfunction •  PCM malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Note •  Recording can be facilitated using the screen capture function of the PC. •  Record the freeze frame data/snap shot data.	―	Go to the next step.
2	VERIFY OTHER RELATED DTCs •  Switch the ignition OFF, and then switch it ON (engine off). •  Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) •  Has any DTC other than P0670:00 been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
		No	Go to the next step.
3	INSPECT GLOW CONTROL MODULE CONNECTOR CONDITION •  Switch the ignition OFF. •  Disconnect the glow control module connector. •  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. •  Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector, then go to Step 16.
4	INSPECT GLOW CONTROL MODULE POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT •  Verify that the glow control module connector is disconnected. •  Measure the voltage at glow control module terminal F (vehicle wiring harness side). •  Is the voltage B+?	Yes	Go to the next step.
		No	Inspect the GLOW 80 A fuse. •  If the fuse is blown: ―  Refer to the wiring diagram and verify if there is a common connector between the battery positive terminal and the glow control module terminal F. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which is shorted to ground. •  Replace the fuse. •  If the fuse is damaged: ―  Replace the fuse. •  If the fuse is normal: ―  Refer to the wiring diagram and verify if there is a common connector between the battery positive terminal and the glow control module terminal F. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step 16.
5	INSPECT GLOW CONTROL MODULE POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT •  Verify that the glow control module connector is disconnected. •  Switch the ignition ON (engine off). •  Measure the voltage at glow control module terminal H (vehicle wiring harness side). •  Is the voltage B+?	Yes	Go to the next step.
		No	Inspect the ENGINE1 15 A fuse. •  If the fuse is blown: ―  Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and glow control module terminal H. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which is shorted to ground. •  Replace the fuse. •  If the fuse is damaged: ―  Replace the fuse. •  If the fuse is normal: ―  Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and glow control module terminal H. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step 16.
6	INSPECT GROUND CIRCUIT OF GLOW CONTROL CONTROL MODULE FOR OPEN CIRCUIT •  Verify that the glow control module connector is disconnected. •  Switch the ignition OFF. •  Inspect the wiring harness for continuity between glow control module terminal E (vehicle wiring harness side) and ground. •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify if there is a common connector between glow control module terminal E and ground. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step 16.
7	INSPECT GLOW PLUG CONNECTOR CONDITION •  Disconnect the glow plug connector. •  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. •  Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector, then go to Step 16.
8	INSPECT GLOW CONTROL CIRCUIT FOR SHORT TO GROUND •  Verify that the glow control module connector and glow plug connector are disconnected. •  Inspect for continuity between the following terminals (vehicle wiring harness side) and ground. ―  Glow plug No.1 terminal A ―  Glow plug No.2 terminal B ―  Glow plug No.3 terminal C ―  Glow plug No.4 terminal D •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. •  Glow control module terminal I and glow plug No.1 terminal A •  Glow control module terminal G and glow plug No.2 terminal B •  Glow control module terminal D and glow plug No.3 terminal C •  Glow control module terminal A and glow plug No.4 terminal D If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which is shorted to ground. Go to Step 16.
		No	Go to the next step.
9	INSPECT GLOW PLUG CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY •  Verify that the glow control module connector and glow plug connector are disconnected. •  Switch the ignition ON (engine off). •  Measure the voltage at the following terminals (vehicle wiring harness side). ―  Glow plug No.1 terminal A ―  Glow plug No.2 terminal B ―  Glow plug No.3 terminal C ―  Glow plug No.4 terminal D •  Is the voltage 0 V?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify if there is a common connector between the following terminals. •  Glow control module terminal I and glow plug No.1 terminal A •  Glow control module terminal G and glow plug No.2 terminal B •  Glow control module terminal D and glow plug No.3 terminal C •  Glow control module terminal A and glow plug No.4 terminal D If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which is shorted to the power supply. Go to Step 16.
10	INSPECT GLOW PLUG CONTROL CIRCUIT FOR SHORT TO EACH WIRING HARNESS •  Verify that the glow control module connector and glow plug connector are disconnected. •  Switch the ignition OFF. •  Inspect for continuity between each glow plug terminals A and D (vehicle wiring harness side). •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. •  Glow control module terminal I and glow plug No.1 terminal A •  Glow control module terminal G and glow plug No.2 terminal B •  Glow control module terminal D and glow plug No.3 terminal C •  Glow control module terminal A and glow plug No.4 terminal D If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the malfunctioning wiring harness. Go to Step 16.
		No	Go to the next step.
11	INSPECT PCM CONNECTOR CONDITION •  Disconnect the PCM connector. •  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. •  Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector, then go to Step 16.
12	INSPECT GLOW CONTROL MODULE CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY •  Verify that the glow control module connector and glow plug connector are disconnected. •  Inspect for continuity between glow control module terminal C (vehicle wiring harness side) and ground. •  Is there continuity?	Yes	If there is a short to ground in wiring harness: •  Refer to the wiring diagram and verify if there is a common connector between glow control module terminal C and PCM terminal 2G. If there is a common connector: ―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. ―  Repair or replace the malfunctioning location. If there is no common connector: ―  Repair or replace the wiring harness which is shorted to ground. Go to Step 16.
		No	Go to the next step.
13	INSPECT GLOW CONTROL MODULE CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY •  Verify that the glow control module connector, the glow plug connector, and the PCM connector are disconnected. •  Switch the ignition ON (engine off). •  Measure the voltage at glow control module terminal C (vehicle wiring harness side). •  Is the voltage 0 V?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify if there is a common connector between glow control module terminal C and PCM terminal 2G. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which is shorted to the power supply. Go to Step 16.
14	INSPECT GLOW CONTROL MODULE CONTROL CIRCUIT FOR OPEN CIRCUIT •  Verify that the glow control module connector, the glow plug connector, and the PCM connector are disconnected. •  Inspect the wiring harness for continuity between glow control module terminal C and PCM terminal 2G (vehicle wiring harness side). •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify if there is a common connector between glow control module terminal C and PCM terminal 2G. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step 16.
15	INSPECT GLOW CONTROL MODULE •  Inspect the glow control module. (See GLOW PLUG CONTROL MODULE INSPECTION [SKYACTIV-D 2.2].) •  Is the glow control module normal?	Yes	Go to the next step.
		No	Replace the glow control module, then go to the next step. (See GLOW PLUG CONTROL MODULE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
16	VERIFY THAT REPAIRS HAVE BEEN COMPLETED •  Reconnect all the disconnected connectors. •  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)].) •  Perform the KOEO self-test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)].) •  Has DTC P0670:00 been recorded?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
		No	Go to the next step.
17	VERIFY OTHER DTCs •  Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
		No	DTC troubleshooting completed.