Speed Control

P0563-BATTERY VOLTAGE HIGH





For a complete wiring diagram Refer to Diagrams/Electrical.

- When Monitored:

Continuously monitored with the engine running and the ACC Module in normal mode.
- Set Condition:
The ACC module will disable the Adaptive Cruise Control (ACC) system and the ACC UNAVAILABLE message will display in the CCN. Once the DTC goes to stored, the ACC system will return to normal operation. The DTC will be cleared after the ACC Module sees 100 consecutive key cycles of the STORED DTC.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Refer to Electronic Control Modules testing for diagnostic procedures and for further possible causes.

Diagnostic Test

1.ACTIVE DTC

NOTE: To help in the service of the Adaptive Cruise Control (ACC) System, it is recommended speaking to the customer to find out what type of environment they were driving in when the cruise concern took place. Heavy rain, snow, ice and fog can cause the ACC system to become unavailable. This should be considered normal operation and no repair is necessary.

Ignition on, engine not running.

With a scan tool, read ACC DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the ACC MODULE VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test

2.PCM DTC PRESENT

Using the scan tool, read the PCM DTC(s).

Are there any charging or battery DTC(s) present?

Yes

- Refer to the ENGINE DIAGNOSTIC and repair all Powertrain related DTC(s) before continuing.

No

- Go To 3

3.(Z901) GROUND CIRCUIT





Turn the ignition off.

Disconnect the ACC Module harness connector.

Using a test light connected to battery voltage, probe the (Z901) Ground circuit.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

- Go To 4

No

- Repair the (Z901) Ground circuit.
- Perform the ACC MODULE VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test

4.(F202) FUSED IGNITION CIRCUIT





Start the engine.

Using a test light connected to ground, probe the (F202) Fused Ignition circuit.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

- Replace the ACC Module.
- Perform the ACC MODULE VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test

No

- Repair the (F202) Fused Ignition circuit.
- Perform the ACC MODULE VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test