Automatic Transmission - 2MT70

DTC P0562 or P0563

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptor
DTC P0562
- System Voltage Low

DTC P0563
- System Voltage High

Circuit/System Description

The transmission control module (TCM) continuously monitors the system voltage on the Ignition voltage circuits. The TCM is located within the control solenoid (w/body and TCM) valve assembly and is not serviced separately. 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 transmission damage.

Conditions for Running the DTC

P0562

The engine is running.

P0563

Ignition voltage is ON.

Conditions for Setting the DTC

P0562

The TCM detects system voltage is 10V or less for 5 out of 6 seconds.

P0563

The TCM detects system voltage is 18V or greater for 5 out of 6 seconds.

Action Taken When the DTC Sets

DTCs P0562 and P0563 are Type C DTCs.

Conditions for Clearing the DTC

DTCs P0562 and P0563 are Type C DTCs.

Diagnostic Aids

* Observe the driver information center (DIC) messaging that would indicate the electrical system requires service.
* Inspect for the following conditions:

- Loose or damaged battery terminals
- Loose or corroded connections at the transmission
- Loose or corroded connections at the accessory power module (APM)

Reference Information
Schematic Reference

* Automatic Transmission Controls Schematics (Electrical Diagrams)
* Hybrid Controls Schematics ()

Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information.

Circuit/System Verification

Engine ON, measure and record the battery voltage with a DMM. The battery voltage should be between 12.5-14.5V.

If the voltage is not within the specified value, or the Charge Indicator light is ON, go to Charging System Test (Charging System Test).

Circuit/System Testing

1. Ignition OFF, disconnect the X175 transmission 16-way harness connector at the transmission.
2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuits listed below and ground.

* Terminal 4
* Terminal 12

• If the test lamp does not illuminate, test the ignition circuit for a Short to Ground or an Open/High Resistance.

3. If all circuits test normal, replace the control solenoid (w/body and TCM) valve assembly.

• If the voltage is not within the specified value, test the Ignition Voltage circuit for an Open/High Resistance or Short to Ground.
• If the voltage is within the specified range, replace the control solenoid (w/body and TCM) valve assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Control Module References (Programming and Relearning) for control solenoid (w/body and TCM) valve assembly replacement, setup, and programming.