Chart C-12B Fan "On" at All Times Two-Speed Coolant Fan

Fig. 047 - Chart C-12B - Fan On At All Times Two Speed Coolant Fan.:

Fig. 048 - WIRING DIAGRAM for Chart C-12B Coolant Fan - Fan "On" At All Times. VIN L:

CHART C-12B

COOLANT FAN - FAN 'ON' AT ALL TIMES

3.0L "N" SERIES

FUEL INJECTION (PORT)

1. Check to see if CKT 535 is shorted to ground which would keep the relay grounded at all times.
2. Checks to see if CKT 335 is shorted to ground. A light indicates the wire is shorted to ground and the following steps will isolate the short.
3. If the test light is 'OFF' after disconnecting, the ECM is shorted internally. Before replacing the ECM, be sure and check the resistance value of low speed side of the fan control relay. Replace if resistance is less than 20 ohms. Also be sure that circuit 535 is not shorted to B+, and check the resistance of the canister purge solenoid and replace if under 20 ohms.