P1670

Output To Cooling Fan Controller Open Circuit Or Short To Ground

P1670 - Cooling fan ECM link.: Short circuit to ground.

Possible causes:
1. Connector MS43 ECM C331, Cooling fan controller unit C1680.
2. Open circuit C331/4 (UW) - C1680/1 (UW).
3. Short circuit C331/4 (UW) - Ground.
4. Cooling fan controller unit.
5. MS43 ECM.

1. Connector MS43 ECM C331, Cooling fan controller unit C1680.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

2. Open circuit C331/4 (UW) - C1680/1 (UW).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

3. Short circuit C331/4 (UW) - Ground.
SHORT_CIRCUIT
Check resistance < 5.0 Ohms.

4. Cooling fan controller unit.
No detail available for this fault

5. MS43 ECM.
No detail available for this fault