GENERAK DESCRIPTION
When the intake air is compressed by the turbo charger, its temperature rises. While this air passes through the intercooler, it's cooled by the ambient air. The air-cooled intercooler works efficiently at driving more than certain vehicle speed, which means that it cools the air well. Then in order to cool the air efficiently at stop or low-speed driving, the cooling fan attached to the intercooler is used.
DTC DESCRIPTION
P1630 is set when excessive current or "0"A is detected in Intercooler fan relay for more than 1 sec. This code is due to 1) short to battery in control circuit or 2) short to ground in control circuit.
DTC DETECTING CONDITION
Item | Detecting Condition | Possible Cause |
DTC Strategy | Voltage monitoring
| I/C FAN relay circuit I/C FAN relay component
|
Enable Conditions | IG KEY "ON"
|
Threshold Value | Short to battery Short to GND
|
Diagnostic Time | 1 sec.
|
Fail Safe | Fuel cut | NO | |
EGR Off | NO |
Fuel Limit | NO |
Check Lamp | NO |
SCHEMATIC DIAGRAM