DESCRIPTION If a malfunction in the absorber control ECU is detected, DTC C1781 is stored. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Warning Indicate | Memory | |
C1781 | Suspension Control ECU Malfunction |
One of the following conditions is met:
- A nonvolatile memory write or read error occurs.
- A CAN communication register is stuck.
- An overheat protection function malfunction occurs.
|
- Absorber control ECU
- CAN communication system
| Does not come on |
Yes | CAUTION / NOTICE / HINT
NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.
Click here 
- Before replacing the absorber control ECU, perform all of the following:
- Symptom simulation.
Click here
- DTC inspection.
Click here
- Techstream inspection.
Click here
- If no malfunctions are found in other areas, replace the absorber control ECU.
- After replacing the absorber control ECU with a new one, perform registration of vehicle identification information.
Click here
PROCEDURE |
1. | CHECK FOR DTCS (CAN COMMUNICATION SYSTEM) |
(a) Check for DTCs. Click here Chassis > Air suspension > Trouble Codes
| Result |
Proceed to | | CAN DTCs are not output |
A | | CAN DTCs are output |
B |
| A |
 | REPLACE ABSORBER CONTROL ECU |
| B |
| GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) | |
