DTC P1788-04: Gear Shift Control Module "B" (Main CPU) System Internal Failure [11/2021 - ]: Description
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The shift actuator ECU has 2 microcomputers.
If the microcomputer (system 2) detects a malfunction of the microcomputer (system 1), a malfunction notification is produced.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P1788-04 | Gear Shift Control Module "B" (Main CPU) System Internal Failure | When the battery voltage is a certain value or more, a malfunction of the microcomputer (system 1) is continuously detected for a certain amount of time or more. (1 trip detection logic) |
Shift control actuator assembly (shift actuator ECU) | Does not come on | Multi-information Display Error Message
|
Transmission | A | SAE: P1788 |