Test Mode Procedure

TEST MODE PROCEDURE

1. INPUT SIGNAL CHECK (Using SST check wire)

HINT: This function checks if signals from the stop light switch assembly and the door courtesy light switch, etc. are being input normally to the ECU.

a. Procedure for Input Signal Check Mode (Test Mode) using SST check wire.

SST 09843-18040

1. Make sure the ignition switch is OFF.
2. Set each of the check items to the condition shown as Operation (A) in the test mode table.




3. Using SST, connect terminals TS and CG of the DLC3.
4. Turn the ignition switch to the ON position.




5. Check that the height control OFF indicator light is blinking.

HINT:
- The height control OFF indicator light blinks at 0.125 sec. intervals.
- If the height control OFF indicator light does not blink, inspect the height control manual indicator light circuit and the TS terminal circuit.







6. Set each of the check items to the condition shown as Operation (B) in the test mode table.

HINT: When checking each item, the height control OFF indicator light should comes on for 1 second.




7. Using SST, connect the 3rd terminal of the SST check wire to terminal TC of the DLC3.

SST 09843-18040




8. Read the number of blinks of the height control OFF indicator light.

HINT:
- As examples, the blinking patterns of a normal system code and code 82 are shown in the illustration.
- If 2 or more malfunctions are indicated at the same time, the lowest numbered code is displayed first.
- When a DTC is not output, check the TC terminal circuit.




9. Check the malfunction using the test mode DTC chart.

b. Ending the Input Signal Check Mode (Test Mode) using SST check wire.

SST 09843-18040

1. With the ignition switch OFF, disconnect the SST check wire from the terminals of the DLC3 and then turn the ignition switch to the ON position.

c. Procedure for Sensor Test Mode (Test Mode) using the intelligent tester.

1. Make sure the ignition switch is OFF.
2. Set each of the check items to the condition shown as Operation (A) in the test mode table.
3. Connect the intelligent tester to the DLC3.
4. Turn the ignition switch to the ON position.
5. Select SIGNAL CHECK mode on the intelligent tester.
6. Set each of the check items to the condition shown as Operation (B) in the test mode table (Procedure "A").

HINT: In procedure "A", all signals can be checked together.

7. Read the DTCs by following the prompts on the tester screen.

HINT: Refer to the intelligent tester operators manual for further details.

C1782/82-C1797/97:

d. DTC of air suspension system test mode (input signal check) function:

If a trouble code is displayed during the test mode DTC check, check the circuit listed for that code.