Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AU6V
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: SUSPENSION CONTROL: ADAPTIVE VARIABLE SUSPENSION SYSTEM: TEST MODE PROCEDURE; 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]

TEST MODE PROCEDURE

TEST MODE PROCEDURE

NOTICE:

After replacing the absorber control ECU, it is necessary to perform registration of vehicle identification information. Vehicle identification information is automatically acquired when the system enters test mode.

HINT:

  • When entering test mode, the absorber control ECU stores all the test mode DTCs first. After completing the check for each test mode item, the test mode DTCs whose deletion conditions are met are cleared. The test mode DTCs for some items may not be cleared when only a certain signal is inspected.
  • When the system returns to normal mode, all the test mode DTCs will be cleared.

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Air suspension / Utility / Signal Check.

Chassis > Air suspension > Utility

Tester Display

Signal Check

(f) Confirm that the system is in test mode by checking that the "Sport S+" indicator in the combination meter assembly is blinking at approximately 0.1-second intervals (0.1 seconds on and 0.1 seconds off).

HINT:

When vehicle identification information has not been acquired, the "Sport S+" indicator in the combination meter assembly blinks at approximately 1-second intervals (1 second on and 1 second off). After vehicle identification information is acquired, the "Sport S+" indicator in the combination meter assembly blinks at approximately 0.1-second intervals (0.1 seconds on and 0.1 seconds off).

(g) With the vehicle stationary on a level surface, wait for 1 second or more.

(h) Read the test mode DTCs by following the prompts on the Techstream screen.

(i) End test mode by following the prompts on the Techstream screen.

(j) Turn the engine switch off and disconnect the Techstream from the DLC3.

TEST MODE DTC CHART

(a) If a trouble code is output during the test mode DTC check, check the circuit listed for that code. For details of each code, refer to Link for the respective DTC in the chart.

DTC Code

Detection Item

Trouble Area

Deletion Condition

Link

C1796

(Up&Down)G Sensor FR
  • Acceleration sensor assembly RH
  • Wire harness or connector
  • Absorber control ECU

With the vehicle stationary on a level surface, an acceleration sensor value that is within -1.96 to 1.96 m/s2 is received from the acceleration sensor for 1 second or more.

2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; SUSPENSION CONTROL: ADAPTIVE VARIABLE SUSPENSION SYSTEM: C1715-C1717,C1796-C1798; Front Acceleration Sensor RH Malfunction

C1797

(Up&Down)G Sensor FL
  • Acceleration sensor assembly LH
  • Wire harness or connector
  • Absorber control ECU

C1798

(Up&Down)G Sensor Rear

Absorber control ECU