Adaptive Damper System Symptom Troubleshooting - Adaptive damper system warning does not go off, and no DTCs are stored

1.

All DTCs check except adaptive damper system:

All DTCs check except adaptive damper system

?1.	Turn the vehicle to the ON mode.

?2.	Do the All DTCs check with the HDS.

Are there DTCs indicated?


	YES

Do the DTC troubleshooting.?


	NO

Go to step 2.

2.

Gauge control module operation check:

Gauge control module operation check

?1.	Do the gauge control module self-diagnostic function.

Is the gauge control module OK?


	YES

Go to step 3.


	NO

Replace the gauge control module.?

3.

Fuse check 1:

Fuse check 1

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Check the following fuse.

Fuse	No. A33^1 No. A31^2

*1: Si
*2: Type-R

Is the fuse OK?


	YES

The fuse is OK. Reinstall the fuse, then go to step 4.


	NO

Replace the fuse. If the fuse blows again, repair a short to ground in the No. A33 fuse circuit (Si) or the No. A31 fuse circuit (Type-R)?

4.

Fuse check 2:

Fuse check 2

?1.

Check the following fuse.

Fuse

No. B5

Is the fuse OK?


	YES

The fuse is OK. Reinstall the fuse, then go to step 5.


	NO

Replace the fuse. Turn the vehicle to the ON mode, then to the OFF (LOCK) mode. If the fuse blows again, repair a short to ground in the No. B5 fuse circuit.?

5.

Open wire check (IG1 OPTION line):

Open wire check (IG1 OPTION line)

?1.

Disconnect the following connector.

Adaptive damper control unit 24P connector

?2.	Turn the vehicle to the ON mode.

?3.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	Adaptive damper control unit 24P connector: disconnected
Test point 1	Adaptive damper control unit 24P connector No. 2
Test point 2	Body ground

Is there battery voltage?


	YES

The IG1 OPTION wire is OK. Go to step 6.


	NO

Repair an open in the wire between the under-dash fuse/relay box and the adaptive damper control unit.?

6.

Open wire check (+B ADS line):

Open wire check (+B ADS line)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Adaptive damper control unit 24P connector: disconnected
Test point 1	Adaptive damper control unit 24P connector No. 8
Test point 2	Body ground

Is there battery voltage?


	YES

The +B ADS wire is OK. Go to step 7.


	NO

Repair an open in the wire between the adaptive damper control unit and the under-hood fuse/relay box.?

7.

Open wire check (GND line):

Open wire check (GND line)

?1.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Adaptive damper control unit 24P connector: disconnected
Test point 1	Adaptive damper control unit 24P connector No. 13
Test point 2	Body ground

Is there 1.0 ? or less?


	YES (without ACC)

The GND wire is OK. Go to step 8.


	YES (with ACC)

The GND wire is OK. Go to step 9.


	NO

Repair an open in the wire between the adaptive damper control unit and body ground (Si: G601, Type-R: G603).?

8.

Open wire check (F-CAN_H, F-CAN_L lines):

Open wire check (F-CAN_H, F-CAN_L lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Disconnect the following connector.

Gauge control module connector A (32P)

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Gauge control module connector A (32P): disconnected
	Adaptive damper control unit 24P connector: disconnected
Test point 1	Gauge control module connector A (32P) No. 19
Test point 2	Adaptive damper control unit 24P connector No. 19

Test point 1	Gauge control module connector A (32P) No. 20
Test point 2	Adaptive damper control unit 24P connector No. 20

Is there 1.0 ? or less?


	YES

The F-CAN_H and F-CAN_L wires are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good gauge control module, then recheck. If the symptom/indication goes away with a known-good gauge control module, replace the original gauge control module.?


	NO

Repair an open in the F-CAN_H wire and/or the F-CAN_L wire between the gauge control module and the adaptive damper control unit.?

9.

F-CAN circuit communication check:

F-CAN circuit communication check

?1.

Reconnect the following connector.

Adaptive damper control unit 24P connector

?2.	Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.

Which result is indicated?


	Gauge control module (Bus C) is Not Available

Go to step 10.


	Adaptive damper control unit (Bus B) is Not Available

Go to step 11.


	Gauge control module and adaptive damper control unit are Available

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.?

10.

Open wire check (F-CAN C_H, F-CAN C_L lines):

Open wire check (F-CAN C_H, F-CAN C_L lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Disconnect the following connectors.

Gauge control module connector A (32P)

CAN gateway 16P connector

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Gauge control module connector A (32P): disconnected
	CAN gateway 16P connector: disconnected
Test point 1	Gauge control module connector A (32P) No. 19
Test point 2	CAN gateway 16P connector (female terminals) No. 5:

Test point 1	Gauge control module connector A (32P) No. 20
Test point 2	CAN gateway 16P connector (female terminals) No. 13:

Is there 1.0 ? or less?


	YES

The F-CAN C_H and F-CAN C_L wires are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good gauge control module, then recheck. If the symptom/indication goes away with a known-good gauge control module, replace the original gauge control module.?


	NO

Repair an open in the F-CAN C_H and/or F-CAN C_L wire between the gauge control module and the CAN gateway.?

11.

Open wire check (F-CAN B_H, F-CAN B_L lines):

Open wire check (F-CAN B_H, F-CAN B_L lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Disconnect the following connectors.

Adaptive damper control unit 24P connector

CAN gateway 16P connector

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Adaptive damper control unit 24P connector: disconnected
	CAN gateway 16P connector: disconnected
Test point 1	Adaptive damper control unit 24P connector No. 19
Test point 2	CAN gateway 16P connector (female terminals) No. 6:

Test point 1	Adaptive damper control unit 24P connector No. 20
Test point 2	CAN gateway 16P connector (female terminals) No. 14:

Is there 1.0 ? or less?


	YES

The F-CAN B_H and F-CAN B_L wires are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good adaptive damper control unit, then recheck. If the symptom/indication goes away with a known-good adaptive damper control unit, replace the original adaptive damper control unit.?


	NO

Repair an open in the F-CAN B_H and/or F-CAN B_L wire between the adaptive damper control unit and the CAN gateway.?