Symptom:
B1820 DOSING PUMP CIRCUIT: SHORT TO GROUND
When Monitored and Set Condition:
B1820 DOSING PUMP CIRCUIT: SHORT TO GROUND
When Monitored: During Dosing Pump activation.
Set Condition: This DTC will set if the DCHA Control detects a high current draw on the
Dosing Pump circuit output pin.
DOSING PUMP SHORTED TO GROUND
DOSING PUMP CONTROL CIRCUIT SHORTED TO THE GROUND CIRCUIT
DOSING PUMP CONTROL CIRCUIT SHORTED TO GROUND
DCHA CONTROL UNIT FAULT
POSSIBLE CAUSES
305
CABIN HEATER