This diagnostic procedure supports the following DTC:
DTC P0563 System Voltage High
• | The system voltage is too high. |
• | The transmission control module (TCM) detects that the voltage is greater than 18 volts for 0.5 second continuously. |
• | The engine revolution is 600 RPM or greater. |
The TCM will request the illumination of the hold lamp and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.
• | The TCM turns OFF the hold lamp when no further failures are detected on the next ignition cycles. |
• | The scan tool can clear the DTC from the TCM history. |
• | The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault. |
• | The TCM wiring harness and connectors |
• | The battery |
• | The TCM |
Step | Action | Values | Yes | No |
---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Automatic Transmission? | -- | Go to Step 2 | |
2 |
Is the voltage within the specified range? | 9-16 V | Go to Step 5 | Go to Step 3 |
3 |
Is the voltage within the specified range? | 9-16 V | Go to Step 5 | Go to Step 4 |
4 | Replace the battery. Did you complete the replacement? | -- | System OK | -- |
5 |
Is the voltage within the specified range? | 9-16 V | Go to Step 7 | Go to Step 6 |
6 |
Did you complete the action? | -- | System OK | -- |
7 | Test the EF7, F6 fuse for an open. Was a condition found? | -- | Go to Step 8 | Go to Step 9 |
8 |
Did you complete the replacement? | -- | System OK | -- |
9 |
Is the voltage within the specified range? | 9-16 V | Go to Step 11 | Go to Step 10 |
10 | Repair the fuse voltage supply lines for an open. Did you complete the repair? | -- | System OK | -- |
11 |
Does the resistance measure the specified value? | 0 ohms | Go to Step 13 | Go to Step 12 |
12 | Repair the circuit between EF7 and terminal A24 for a short to ground and an open. Did you complete the repair? | -- | System OK | -- |
13 |
Is the voltage within the specified range? | 9-16 V | Go to Step 14 | Go to Step 15 |
14 | Repair the circuit from EF7 to terminal A24 of the TCM for a short to battery. Did you complete the repair? | -- | System OK | -- |
15 |
Does the resistance measure the specified value? | 0 ohms | Go to Step 17 | Go to Step 16 |
16 | Repair the circuit between F6 and terminal A6 for a short to ground and an open. Did you complete the repair? | -- | System OK | -- |
17 |
Is the voltage within the specified range? | 9-16 V | Go to Step 18 | Go to Step 19 |
18 | Repair the circuit between F6 and terminal A6 for a short to battery. Did you complete the repair? | -- | System OK | -- |
19 |
Was a condition found? | -- | Go to Step 20 | -- |
20 | Replace the TCM. Refer to Transmission Control Module Replacement . Did you complete the replacement? | -- | Go to Step 21 | -- |
21 |
Has the last test failed or is the current DTC displayed? | -- | Go to Step 2 | System OK |
This diagnostic procedure supports the following DTC:
DTC P0563 System Voltage High
• | The system voltage is too high. |
• | The transmission control module (TCM) detects that the voltage is greater than 18 volts for 0.5 second continuously. |
• | The engine revolution is 600 RPM or greater. |
The TCM will request the illumination of the malfunction indicator lamp (MIL) and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.
• | The TCM turns OFF the MIL when no further failures are detected on the next ignition cycles. |
• | The scan tool can clear the DTC from the TCM history. |
• | The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault. |
• | The TCM wiring harness and connectors |
• | The battery |
• | The TCM |
Step | Action | Values | Yes | No |
---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Automatic Transmission? | -- | Go to Step 2 | |
2 |
Is the voltage within the specified range? | 9-16 V | Go to Step 5 | Go to Step 3 |
3 |
Is the voltage within the specified range? | 9-16 V | Go to Step 5 | Go to Step 4 |
4 | Replace the battery. Did you complete the replacement? | -- | System OK | -- |
5 |
Is the voltage within the specified range? | 9-16 V | Go to Step 7 | Go to Step 6 |
6 |
Did you complete the action? | -- | System OK | -- |
7 | Test the EF7, F6 fuse for an open. Was a condition found? | -- | Go to Step 8 | Go to Step 9 |
8 |
Did you complete the replacement? | -- | System OK | -- |
9 |
Is the voltage within the specified range? | 9-16 V | Go to Step 11 | Go to Step 10 |
10 | Repair the fuse voltage supply lines for open. Did you complete the repair? | -- | System OK | -- |
11 |
Does the resistance measure the specified value? | 0 ohms | Go to Step 13 | Go to Step 12 |
12 | Repair the circuit between EF7 and terminal A24 for a short to ground and an open. Did you complete the repair? | -- | System OK | -- |
13 |
Is the voltage within the specified range? | 9-16 V | Go to Step 14 | Go to Step 15 |
14 | Repair the circuit from EF7 to terminal A24 of the TCM for a short to battery. Did you complete the repair? | -- | System OK | -- |
15 |
Does the resistance measure the specified value? | 0 ohms | Go to Step 17 | Go to Step 16 |
16 | Repair the circuit between F6 and terminal A6 for a short to ground and an open. Did you complete the repair? | -- | System OK | -- |
17 |
Is the voltage within the specified range? | 9-16 V | Go to Step 18 | Go to Step 19 |
18 | Repair the circuit between F6 and terminal A6 for a short to battery. Did you complete the repair? | -- | System OK | -- |
19 |
Was a condition found? | -- | Go to Step 20 | -- |
20 | Replace the TCM. Refer to Transmission Control Module Replacement . Did you complete the replacement? | -- | Go to Step 21 | -- |
21 |
Has the last test failed or is the current DTC displayed? | -- | Go to Step 2 | System OK |