ENGINE - 2GR-FE ENGINE
01MEG21Y
01MEG22Y
Engine Coolant Temperature
Sensor
Crankshaft Position Sensor
Combination Meter
Vehicle Speed SignalECM
CAN
Air Conditioning ECUCooling
Fan
ECUFan Motor
No. 1
Fan Motor
No. 2
Except Towing Package Models
Towing Package Models Engine Coolant Temperature
Sensor
Crankshaft Position Sensor
Combination Meter
Vehicle Speed SignalECM
CAN
Air Conditioning ECUCooling
Fan
ECU
No. 1
Cooling
Fan
ECU
No. 2Fan Motor
No. 1
Fan Motor
No. 2EG-129
12. Cooling Fan Control System
General
A cooling fan control system is used. To achieve an optimal fan speed in accordance with the engine coolant
temperature, vehicle speed, engine speed, and air conditioning operating conditions, the ECM calculates
the proper fan speed and sends the signals to the front controller. By receiving the signals from the ECM,
the front controller sends proper fan speed control signals to the cooling fan ECU.
Upon receiving the signals from the front controller, the cooling fan ECU actuates the fan motors.
Wiring Diagram
CRUISE CONTROL – CRUISE CONTROL SYSTEMCC–23
CC
DESCRIPTION
Refer to the SFI system (see page ES-224).
WIRING DIAGRAM
Refer to the SFI system (see page ES-224).
INSPECTION PROCEDURE
Refer to the SFI system (see page ES-224).
DTC P0500/21 Vehicle Speed Sensor "A"
DTC P0503/23 Vehicle Speed Sensor Circuit
DTC No. DTC Detection Condition Trouble Area
P0500/21
P0503/23No vehicle speed sensor signal to ECM under
conditions (a) and (b) (2 trip detection logic):
(a) Cruise control system is operating
(b) Vehicle is being driven• Combination meter
• Vehicle speed sensor
• Vehicle speed sensor circuit
•ECM
CC–36CRUISE CONTROL – CRUISE CONTROL SYSTEM
CC
DESCRIPTION
Connecting terminals TC and CG of the DLC3 enables DTCs to be read through blinking patterns of the
combination meter's CRUISE main indicator light.
HINT:
When a warning light of the combination meter blinks continuously, terminal TC of the DLC3 or an ECM
may have a ground short.
WIRING DIAGRAM
TC and CG Terminal Circuit
E110507E03
