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 control 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.
P062E is set when the problem of transforming system 2 for injector control occurs.
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 distinguish 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 | ON | |||
Control Type | Component Resistance | Operating Voltage |
PIEZO voltage control | 150 ~250 kΩ (20℃) | 100V ~ 200V(100V ~ 140V at 250bar) |
Fig. 1) Signal waveform of Injector at idle.
