4.
Select "ACTUATION TEST" parameter on the scantool.
specification : Lamp turns ON at ACTUATION TEST of Glow lamp
Heating combustion chamber, glow plug increases fuel ignitibility and makes fuel in the foggy state easily when engine is cold. Thus, glow plug makes engine starting easily and decreases exhaust gas produced just after turning engine on when engine is cold.ECM controls operation and operating duration of glow plug relay which supplies power to glow plug with ECTS signal, battery voltage and IG KEY ON signal.Through glow lamp in cluster, ECM let drivers know if glow plug is ON.
P0381 is set when 1)excessive voltage is detected or 2)no current is detected like open or short to ground in glow lamp control circuit for more than 1 sec. at glow lamp ON condition. This code is due to open in glow lamp control circuit or internal open in filament of glow lamp component.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy | ● Voltage monitoring | ● Open in glow lamp ● Glow lamp circuit | ||
Enable Conditions | ● IG KEY "ON" (monitoring only performed within lamp operating condition) | |||
Threshold Value | ● Short to battery ● Short to GND, Wiring open | |||
Diagnostic Time | ● 1.0 sec. | |||
Fail Safe | Fuel cut | NO | ||
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | NO | |||
Connect Scantool to Data Link Connector (DLC).
Warm engine up to normal operating temperature.
Turn "OFF" electrical devices and A/C.
Select "ACTUATION TEST" parameter on the scantool.
specification : Lamp turns ON at ACTUATION TEST of Glow lamp
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge of component.
Perform checking procedure as follows.
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking device and connecting condition between terminal and wiring.
Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. ( after checking, reconnect the pin at correct position. )
Is the problem found?
▶ Repair the trouble causing part and go to "Verification of Vehicle Repair".
▶ Go to "Control Circuit Inspection".
Check voltage in control circuit
IG KEY "OFF", ENGINE "OFF".
Disconnect ECM connector .
IG KEY "ON".
Measure the voltage of terminal 69 of ECM connector(C244-K).
Specification : 10.8V~13.0V
Is the measured voltage within the specification?
▶ Go to "2. Grounding test of glow lamp control circuit"..
▶ Check filament of glow lamp. ( Refer to Component Inspection)
Grounding test of glow lamp control circuit
IG KEY "OFF", ENGINE "OFF".
Disconnect ECM connector.
IG KEY "ON".
Ground ECM connector(C244-K) terminal 69 to chassis ground.
specification : Glow lamp turns ON.
Does glow lamp turn ON?
▶ Go to "Verification of Vehicle Repair".
▶ Repair short to battery in glow lamp control circuit and go to "Verification of Vehicle Repair".
IG KEY "OFF", ENGINE "OFF".
Dismount cluster and disconnect glow lamp.
Check filament of glow lamp.
supply 12V to glow lamp to turn lamp ON.
specification : Lamp turns ON when 12V is supplied.
Does glow lamp turn ON?
▶ Go to "Verification of Vehicle Repair".
▶ Replace glow lamp and go to "Verification of Vehicle Repair".
After a repair, it is essential to verify that the fault is corrected.
After connecting Scantool select "DIAGNOSTIC TROUBLE CODES(DTCs)" mode.
Clear recorded DTC using Scantool.
Drive the vehicle within DTC "Enable conditions" in "General information".
After selecting "DIAGNOSTIC TROUBLE CODES(DTCs)" mode and check if DTC is recorded again.
Are any DTCs recorded ?
▶ Go to the DTC guide of recorded NO. in Scantool.
▶ System operates within specification.
