Test Mode Check (Using Hand-Held Tester)

TEST MODE CHECK (HAND-HELD TESTER)

HINT:
- When entering the test mode, the suspension control ECU sets all the test DTCs first.
After completing the input signal operation for each inspection item, the DTCs that are determined normal by the suspension control ECU will be erased.
The DTCs for other inspection items may not be erased when only a certain signal is inspected.
- When the test mode returns back to the normal mode, all the test DTCs will be erased.

a. Procedure for Test Mode.




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

HINT: In step (6), all signals can be checked together.

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

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

8. After completing the input signal check, disconnect the tester and turn the ignition switch off.

DTC of Air Suspension System test mode function

C1782/82:

C1784/84 - C1799/99:

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