Code No. C1788:
Longitudinal G sensor signal
caution |
If a diagnosis code is set,
be sure to diagnose the CAN bus line.
|
DIAGNOSTIC FUNCTION
If the laser radar detects an error in the longitudinal G sensor signal sent from the
ASC-ECU, diagnosis code No. C1788 is set.
CHECK CONDITION
When all the following conditions are satisfied.
- After the ignition switch is turned ON, two or more seconds passed.
- After the engine has started.
PROBABLE CAUSES
- Malfunction of the CAN bus line (noise contamination)
- Malfunction of the ASC-ECU
- Malfunction of the laser radar
|
STEP 1. M.U.T.-III CAN bus diagnosis.
|
|
Use the M.U.T.-III to diagnose the CAN bus lines.
|
|
Q.
Is the check result normal?
|
|
Go to Step 2.
|
|
|
|
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
|
|
|
|
STEP 2. Check whether the diagnosis code is set again.
|
|
Check again if the diagnosis code is set in the laser radar.
|
|
(1)Erase the set diagnosis code.
|
|
(2)Turn the ignition switch to the "LOCK" (OFF) position.
|
|
(4)Check if the diagnosis code is set.
|
|
Q.
Is the diagnosis code set?
|
|
Replace the ASC-ECU (Refer to GROUP 35C - Hydraulic Unit ).
|
|
|
|
Go to Step 3.
|
|
|
|
STEP 3. Check whether the diagnosis code is set again.
|
|
Check again if the diagnosis code is set in the laser radar.
|
|
(1)Erase the set diagnosis code.
|
|
(2)Turn the ignition switch to the "LOCK" (OFF) position.
|
|
(4)Check if the diagnosis code is set.
|
|
Q.
Is the diagnosis code set?
|
|
Replace the laser radar (Refer to ).
|
|
|
|
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent
Malfunction).
|
|
|