Operation Check

CHECK ABSORBER CONTROL ACTUATOR OPERATION

Using SST, connect the terminals 12 (TS) and 4 (CG) of the DLC3.
SST 09843-18040
Turn the power switch ON (READY).

Fig 1: Identifying DLC3 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check that the absorber control indicator light is blinking in Test Mode.

HINT:

If the absorber control indicator light does not blink, inspect the absorber control indicator light circuit and TS and CG terminal circuit.

ABSORBER CONTROL INDICATOR LIGHT TROUBLE AREA

Trouble area	See procedure
Absorber control indicator light (Remains on)	ABSORBER CONTROL INDICATOR LIGHT REMAINS ON
Absorber control indicator light (Does not come on)	ABSORBER CONTROL INDICATOR LIGHT DOES NOT COME ON
TS and CG terminal circuit	TS AND CG TERMINAL CIRCUIT

Fig 2: Identifying Absorber Control Indicator Light Blinking Pattern

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check absorber control actuator operation.

Starting from the SOFT position, depress the brake pedal. Using the intelligent tester, check that the absorber control actuator position increases by 2 steps each time the brake pedal is depressed (1 (SOFT) → 3 → 5 → 7 → 9 → 11 → 15 → 17 (HARD)). At this time, bounce the vehicle and check that the shock absorber is becoming harder.

HINT:

Every time the brake pedal is depressed, the absorber control actuator rotates in the hard to soft direction in 15° intervals up to a maximum angle of 120°.
To hold the absorber control actuator at a specific position, adjust it using the above mentioned procedure, then increase the vehicle speed to 5 km/h (3 mph).

Fig 3: Checking Absorber Control Actuator Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

After that, the absorber control actuator position does not change until the power switch is turned OFF.

If the absorber control actuator does not operate, inspect the absorber control actuator circuit and absorber control actuator installation condition.

ABSORBER CONTROL ACTUATOR CIRCUIT TROUBLE AREA

Trouble area	See procedure
Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
Absorber control actuator installation condition	INSPECTION DISASSEMBLY

Turn the power switch OFF.
Disconnect SST from terminal 12 (TS) and 4 (CG) of the DLC3.
Turn the power switch ON (IG).
HINT:

If the power switch remains ON (IG) after SST is removed from DLC3, the vehicle will remain in the previously initialized Test Mode.