4.
Check the DTC related injectors on ECM
specification : DTC related injectors should not be set.
There are two transformer for injector operation in side of ECM. 1 pilot and 1 main injection are operated by ECM in EURO 3 diesel engine therefore one transformer device is sufficient to control injector however, 2 pilot and if CPF is applied, 2 post injection are performed additionally by ECM in EURO 4 diesel engine thus, two transformer is required.
P062D is set when the problem of transforming system 1 for injector contol occurs. This code is due to the failure of transforming system inside of ECM.
※ If battery voltage is low, this code can be set. Therefore, beforehand, check DTC code relevant to battery voltage and charging system.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy | ● Voltage monitoring | ● Injector circuit ● ECM internal error | ||
Enable Conditions | ● Engine running | |||
Threshold Value | ● Power stage error for injector voltage control, CPU circuit failure ● Disable to distingish which cylinder is failed by resulting of multiple of random injectors failure. | |||
Diagnostic Time | ● Immediately | |||
Fail Safe | Fuel cut | YES | ||
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | YES | |||
Injector Component Resistance | Injector Operating Voltage | Injector Operating Current | Injector Control Type |
0.255 ±0.04Ω (20℃) | 80V | Peak current : 18±0.5A Hold in current : 12±0.5A | Current control |
Connect scantool to Data Link Connector (DLC).
IG KEY "ON"
Check the DTC on the Engine system with scantool
Check the DTC related injectors on ECM
specification : DTC related injectors should not be set.
Is there any DTC related injectors ?
Refer to "DTC" guide corresponding to each problem occurred injector.
Go to "Verification of Vehicle Repair".
Injector #1 related problem :
Refer to P0201for open in injector circuit.
Refer to P0262 for short in injectoer circuit.
Injector #2 related problem :
Refer to P0202 for open in injector circuit.
Refer to P0265 for short in injectoer circuit.
Injector #3 related problem :
Refer to P0203 for open in injector circuit.
Refer to P0268 for short in injectoer circuit.
Injector #4 related problem :
Refer to P0204 for open in injector circuit.
Refer to P0271 for short in injectoer circuit.
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 "Power Circuit Inspection".
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.
