• | 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. |
The transmission control module (TCM) continuously monitors the system voltage on the Ignition 1 voltage circuits. Lower than normal voltage may be inadequate to operate the transmission control solenoids properly. Improper solenoid operation may cause erratic transmission operation, which may result in internal damage. Theses DTC detects high or low TCM voltage for an extended period.
• | Ignition voltage is between 8.6-18.0 volts. |
• | Engine speed is 1200 RPM or greater. |
Ignition voltage is between 8.6-18.0 volts.
The TCM detects system voltage is 11 volts or less for 4 seconds.
The TCM detects system voltage is 18 volts or greater for 10 seconds.
DTCs P0562 and P0563 are Type C DTCs.
DTCs P0562 and P0563 are Type C DTCs.
• | Observe the driver information center (DIC) messaging that would indicate the electrical system requires service. |
• | Inspect for the following conditions: |
- | Loose or damaged terminals at the generator |
- | Loose or worn generator drive belt |
Charging System Description and Operation
Control Module References for scan tool information
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Engine ON, measure and record the battery voltage with a DMM. The battery voltage should be between 12.5-14.5 volts.
⇒ | If the voltage is not within the specified value, or the charge indicator light is ON, refer to Charging System Test . |
Engine ON, the scan tool Ignition voltage parameter should display between 12.5-14.5 volts.
⇒ | If the voltage is not within the specified value, test the ignition voltage circuit for an open circuit or short to ground. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.