GS 350 AWD V6-3.5L (2GR-FSE) (2009)
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Standard waveform:
-
If the input signal is abnormal, there is a malfunction in the ECM or cooling fan ECU.
-
If the output current is abnormal even when the input signal is normal, there is a malfunction in the cooling fan ECU (S1), cooling fan
motor or power source circuit.
(c) Check the input voltage.
(1) Disconnect the cooling fan ECU connector.
(2) Turn the engine switch on (IG). Check the voltage of the B3-3 (+B1) terminal on the wire harness side.
Standard voltage:
11 to 14 V
If the result is not as specified, check the power source system (H-fuse, fuse, wire harness and relay).
(3) Connect the cooling fan ECU connector.
(d) Check the wire harness (Cooling fan ECU and body ground).
(1) Disconnect the cooling fan ECU connector.
