ENGINE OVER TEMPERATURE (OVERHEAT) - Overall Function Check (Cont'd) / Wiring Diagram

EF & EC-7221wiring diagram

Component pin numbers on relay/motors/fuse box not individually labelled in diagram — marked as ??.

Overall Function Check (Cont'd)

1
Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to "Diagnostic Procedure", EC-7225.
2
Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to "Diagnostic Procedure", EC-7225.
3
Start engine. Be careful not to overheat engine.
4
Set temperature control lever to full cold position.
5
Turn air conditioner switch "ON".
6
Turn blower fan switch "ON".
7
Run engine at idle for a few minutes with air conditioner operating. Be careful not to overheat engine.
8
Make sure that cooling fan operates. If NG, go to "Diagnostic Procedure", EC-7225.

Wiring Schematic

ECMCOOLING FAN RELAYCOOLING FAN MOTOR-1 (M/T)COOLING FAN MOTOR-1 (CVT)FUSIBLE LINK AND FUSE BOXBATTERYBody Ground

ECM

ECM:22COOLING FAN RELAY:??R/W

COOLING FAN RELAY

COOLING FAN RELAY:??COOLING FAN MOTOR-1 (M/T):??L/B

COOLING FAN RELAY:??COOLING FAN MOTOR-1 (CVT):??L/B

COOLING FAN MOTOR-1 (M/T)

COOLING FAN MOTOR-1 (M/T):??Body Ground:??B

FUSIBLE LINK AND FUSE BOX

FUSIBLE LINK AND FUSE BOX:??COOLING FAN RELAY:??G/W

BATTERY

BATTERY:??FUSIBLE LINK AND FUSE BOX:??W