Disconnect the connector (arrowed) and connect jumper wires to the positive and negative terminals of the battery

Main engine relay terminal guide

Test the fan relay (Nippondenso). With no voltage applied, there should be continuity between 1 and 2, and 3 and 4 - with voltage applied across 1 and 2, there should be NO continuity between 3 and 4

The switch (arrowed) for the cooling fan control on the thermostat cover

On Bosch relays, disregard the terminal numbers, test it just like this Nippondenso relay

connector from the cooling fan temperature switch (see illustration 3.6). With the key ON, the fan should now operate. If not, check the fan relay, wiring between the temperature switch and the relay, and the fan motor itself.

2 The cooling fan temperature switch can be tested for continuity with an ohmmeter. Disconnect the wiring connector and attach one lead of the ohmmeter to the terminal on the switch, and the other lead to the body of the switch (see illustration). When the engine is cold (below 83°C) there should be continuity. When the engine is warm (above 93°C), there should be NO continuity.

Дата добавления: 2014-12-23