DTC C1153 / C1155
Precautions: Precautions for Diagnosing Trouble · Precautions for Steering · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
C1153: Power Supply Voltage Too Low Battery voltage is lower than 9 V even if one of the following conditions is met:
•Voltage at fail-safe relay contact is higher than 19.2 V.
•Engine speed is more than 600 rpm and fail-safe relay ON command is outputted. |
•Charging system
•P/S control module (steering column assembly) |
|
C1155: P/S Control Module Internal Failure / Power Supply Voltage Too High P/S control module internal failure. |
Circuit Diagram
| [A]: | P/S control module connector “G55” (View [a]) | 1. | P/S control module / motor assembly | 4. | “P/S” fuse |
| A1: | P/S control module power supply circuit | 2. | CPU | 5. | To continuous power supply |
| A2: | P/S control module ground circuit | 3. | Main fuse box |
DTC Confirmation Procedure
Run engine at idle speed for more than 5 seconds.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “P/S System Check” performed?
|
Go to Step 2.
|
Go to P/S System Check and recheck DTC.
|
| 2 |
P/S control module power supply and ground circuit check
1)Check P/S control module power supply and ground circuits.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
P/S control module power supply voltage check
1)Measure battery voltage with engine running at 3000 rpm.
Is voltage between 9 V and 15 V?
|
Substitute a known-good steering column assembly and recheck DTC.
|
Check charging system.
•M16A model:
•K14C model: •D16AA model: |