Input Signal Check (Test Mode)

INPUT SIGNAL CHECK (TEST MODE)

HINT: This check is to see whether signals from the steering sensor and stop light switch, etc. are being input normally to the ECU.

a. In case of not using LEXUS hand-held tester:
Check the input signal (Test mode).

1. Turn the ignition switch OFF.
2. Set each check item in the following table to the condition in Operation (A).




3. Using SST, connect terminals Ts and CG of the DLC3.

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4. Start the engine.

HINT:
- At this time the absorber control indicator light comes on for 2 seconds. After that, this light blinks at 0.25 second intervals.
- When the absorber control indicator does not blink, check the Ts terminal circuit.

5. Each check item is set to the condition in Operation (B).






HINT: When (5) is performed, the absorber control indicator light comes on for 1 second.




6. Using SST, connect terminals Tc and CG of the DLC3.

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HINT: This should be done with terminals Ts and CG of the DLC3 connected.

7. Read the DTC output by the absorber control indicator light.

HINT:
- See the list of DTC.
- Reading method of the code is the same as that of the diagnosis code.
- When the DTC is not output, check the Tc terminal circuit.

As an example, the blinking patterns for normal code and code 81 are as shown in the illustration.




8. Check the malfunction using the code in the table.
9. Remove the SST from the terminals of the DLC3.

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b. In case of using LEX US hand--held tester:
Check the input signal.

1. Hook up the LEXUS hand-held tester to the DLC3.
2. Do step (1) to (5).
3. Read the DTC by following the prompts on the tester screen.

HINT: Please refer to the LEXUS hand-held tester operator's manual for further details.

DTC of the input signal check:

C1781/81 - C1797/97:

If a malfunction code is displayed during the test mode DTC check, check the circuit listed for that code. For details of each code, "DTC No." in the DTC chart.

c. Finishing the input signal check (Test mode).
With the ignition switch OFF, disconnect the SST from the terminals of the DLC3 and then turn the ignition switch ON.

SST 09843-18040