Page 2545 of 4500

Fig. 13: Inspecting CANCEL Function
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
e. Inspect the RES (RESUME) function.
1. Push the ON-OFF button on.
2. Drive at the required speed (40 km/h (25 mph) or higher).
3. Push the cruise control main switch to SET/COAST.
4. When doing one of the following, check that the cruise control system is cancelled and that
the normal driving mode is reset.
Depressing the brake pedal
<003000520059004c0051004a00030057004b004800030056004b004c004900570003004f0048005900480055000300570052000300440051005c0003005300520056004c0057004c0052005100030048005b0046004800530057000300270003000b001900
57004b000f000300180057004b000f00030044005100470003[4th gears)
Pulling the cruise control main switch to CANCEL
5. After pushing the cruise control main switch to RES/ACC at a driving speed of more than 40
km/h (25 mph), check that the vehicle restores the speed prior to the cancellation.
HINT:
RESUME function (in the Vehicle-to-vehicle Distance Control Mode only)
The stored vehicle speed is retained even if vehicle speed goes below 40 km/h (25 mph) once. The
previously stored vehicle speed can be resumed by pushing the cruise control main switch to RES/ACC
when vehicle speed returned to approximately 40 km/h (25 mph) or more.
Page 2546 of 4500
Fig. 14: Inspecting RES (RESUME) Function
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1.INPUT SIGNAL CHECK
a. Connect the hand-held tester to the DLC3.
b. Check the cruise control main switch using the DATA LIST function in the hand-held tester (ON-
OFF, CANCEL, SET/COAST, RES/ACC, and MODE).
Page 2547 of 4500
Fig. 15: Identifying Cruise Control Main Switch
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2.INSPECT MODE SWITCH
a. Turn the ignition switch to the ON position.
HINT:
Dynamic radar cruise system is in the default mode.
b. After pushing the ON-OFF button on, push the cruise control main switch to MODE for at least 1
second without any other control. Make sure that only "NORM." and nothing else is indicated on
the display.
Page 2548 of 4500
Fig. 16: Inspecting Mode Switch
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HINT:
If the system cannot switch to the constant speed control mode, push the ON-OFF button off once, and
perform the same procedures as shown above. If a malfunction is still detected in the system, start the
en
gine again and perform the above procedure.
Page 2549 of 4500
Fig. 17: [Display NORM]
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3.INSPECT STEERING PAD SWITCH ASSY
a. Turn the ignition switch to the ON position.
b. Push on the ON-OFF button of the cruise control main switch.
c. Push on the distance control switch (DISP2) of the steering pad switch.
d. Check that the indication of vehicle-to-vehicle distance, which is shown in the multi-information
displa
y on the combination meter, changes from "LONG", "MIDDLE" to "SHORT" in that order.
Page 2550 of 4500
Fig. 18: Multi-Information Display Chart On Combination Meter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
The indication is immediately set to "LONG" each time the engine is started.
If a normal system code is displayed during the DTC check but the problem still occurs, check the suspected
areas for each problem symptom in the order given in the table below and proceed to the relevant
troubleshooting page.
HINT:
Inspect the "Fuse" and "Relay" before confirming the suspected areas as shown in the Fig. 19
below. Inspect
each suspected area for the correspondin
g symptom in numerical order.
Page 2551 of 4500
Fig. 19: Problem Symptoms Chart
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Page 2552 of 4500
1.DISTANCE CONTROL ECU
Fig. 20: Identifying ECU Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
ECU TERMINALS VOLTAGE AND RESISTANCE SPECIFICATION
Symbols (Terminals
No.)Wiring
ColorTerminal DescriptionConditionSpecified
Condition
+B - GND (D2-1 - D2-
12)R-B - BRBatteryAlways10 to 14V
CANH (D2 - 8)LGCAN communication
signalCAN
communication
circuit
-
CANL (D2 - 9)LCAN communication
signalCAN
communication
circuit
-
SGND - Body ground
(D2-10 - Body ground)BR - Body
groundGroundAlwaysBelow 1 ohms
GND - Body ground
(D2-12 - Body ground)BR - Body
groundGroundAlwaysBelow 1ohms
IGB - GND (D2-13 -
D2-12)L-0 - BRIgnition switch ON signalIgnition switch OFF
--> ONBelow 1 V --> 10
to 14V
LRDD - GND (D2-22 -
D2-12)P-L - BRMillimeter wave radar
sensor input signalIgnition switch ONPulse generation
(see waveform 1)
LRRD - GND (D2-23 -
D2-12)L-Y - BRMillimeter wave radar
sensor output signalIgnition switch ONPulse generation
(see waveform 2)