The TCCM makes decisions related to 4WD operation based on CAN communications received from the PCM, ABS, and TCM. The TCCM then actuates the Electromagnetic Clutch (EMC) using a duty cycle signal.
TCCU sets DTC P1728 if EMC control circuit is open, short to ground, or short to battery.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Voltage Check |
•
Poor Connection
•
Open in control circuit
•
Short to battery in control circuit
•
Short to ground in control circuit
•
Faulty EMC
•
Faulty TCCM |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
Below 1.8 V when EMC operation. or Higher than battery voltage for 1sec. when EMC coil is not working. | |
MIL ON Condition |
•
Lamp ON |
Temperature ( °C) | Resistance (Ω) |
23 °C | About 3.6 Ω |
