Without Scan Tool

PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) INDICATORCHECK
(1) Turn the ignition switch to ON.
(2) Check that the CRUISE MAIN indicator light comes on when the cruise control main switch is turned on, and that the indicator light goes off when the main switch is turned OFF.

HINT: If the indicator check result is not normal, proceed to troubleshooting for the combination meter section.





(b) DTC CHECK

HINT: If a malfunction occurs in the No.1 vehicle speed sensors or actuator, etc. during cruise control driving, the ECU actuates AUTO CANCEL of the cruise control and turns on and off the CRUISE MAIN indicator light to inform the driver of a malfunction. At the same time, the malfunction is stopped in memory as a DTC.





(c) OUTPUT OF DTC USING DIAGNOSIS CHECK WIRE
(1) Turn the ignition switch ON.
(2) Using SST, connect terminals Tc and E1 of DLC1. SST 09843-18020
(3) Read the DTC on the CRUISE MAIN indicator light.





HINT: If the DTC is not output, inspect the diagnosis circuit. As an example, the blinking patterns for codes; normal, 11 and 21 are shown in the illustration.





2. ECU TERMINAL VALUES MEASUREMENT BY USING TOYOTA BREAK-OUT-BOX AND TOYOTA HAND-HELD TESTER
(a) Hook up the TOYOTA break-out-box and TOYOTA hand-held tester to the vehicle.
(b) Read the ECU input/output values by following the prompts on the tester screen.
(c) Please refer to the TOYOTA hand-held tester has a "Snapshot" function. This records the measured data and is effective in the diagnosis of intermittent problems.





3. DTC CLEARANCE
(a) After completing repairs, the DTC retained in memory can be cleared by removing the DOME fuse for 10 seconds or more, with the ignition switch off.
(b) Check that the normal code is displayed after connecting the fuse.





4. INPUT SIGNAL CHECK

HINT:
(1) For check No.1 ~ No 2
Turn the ignition switch ON.
(2) For check No.3
- Turn ignition switch ON.
- Shift to D position.
(3) For check No.4
- Jack up the vehicle.
- Start the engine.
- Shift to D position.

(a) Press the control switch to SET/COAST or RES/ACC p051tion and hold it down or hold it up "1".
(b) Push the main switch ON "2".
(c) Check that the CRUISE MAIN indicator light blinks twice or 3 times repeatedly after 3 seconds.
(d) Turn the SET/COAST or RES/ACC switch OFF.
(e) Operate each switch as listed in the table below.
(f) Read the blinking pattern of the CRUISE MAIN indicator light.
(g) After performing the check, turn the main switch OFF.

HINT: When 2 or more signals are input to the ECU, the lowest numbered code will be displayed first.

Indication Code Chart:

Input Signal Check