• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
B+ | C0914 | C0914 | -- | -- |
Ground | -- | C0914 | -- | -- |
The adaptive cruise module (ACM) monitors the system voltage to ensure that the voltage stays within the proper range. Damage to components, and incorrect data may occur when the voltage is out of range.
• | The vehicle speed is above 8 km/h (5 mph). |
• | The system voltage is between 9.0-18 volts. |
The ACM detects a system voltage below 8.5 volts for 1 second.
• | The ACM will command the RADAR NOT READY warning message to be illuminated on the driver information center (DIC). |
• | The Cruise Control will be disabled. |
• | The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction. |
• | Using the scan tool Clear DTC Information function can clear the DTC. |
• | The system voltage is greater than 9.0 volts. |
Control Module References for scan tool information
⇒ | If the battery voltage is not within the specified range, refer to Charging System Test |
⇒ | If greater than the specified value, test the ground circuit for an open/high resistance. |
⇒ | If the test lamp did not illuminate , test the circuit for an open/high resistance. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ACM replacement, setup, and programming