• | 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 |
---|---|---|---|---|
IGN | P0562, P2534 | P0562, P2534 | P0563 | -- |
Ground | -- | P0562, P2534 | -- | -- |
The transmission control module (TCM) within the control solenoid (w/body and TCM) valve assembly continuously monitors the system voltage on the ignition voltage circuit.
• | Ignition voltage is between 8.6 volts and 19.0 volts. |
• | Engine speed is 1200 RPM or greater. |
Ignition voltage is between 8.6 volts and 19.0 volts.
• | The engine is running. |
• | Ignition voltage is between 8.6 volts and 19.0 volts. |
The TCM detects system voltage is 11 volts or less for 10 seconds.
The TCM detects system voltage is 18 volts or greater for 10 seconds.
The TCM detects 2 volts or less on the ignition 1 voltage circuit at the TCM for 10 seconds or more.
DTCs P0562 and P0563 are Type C DTCs.
• | DTC P2534 is a Type A DTC. |
• | The TCM turns OFF all high side drivers. |
• | The TCM turns OFF all solenoids. |
• | The TCM commands maximum line pressure. |
• | The TCM freezes transmission adaptive functions. |
• | The TCM commands the TCC OFF. |
• | The TCM allows the vehicle to operate in transmission protection mode. |
• | DTCs P0562 and P0563 are Type C DTCs. |
• | DTC P2534 is a Type A DTC. |
Inspect for the following conditions:
• | Loose or damaged terminals at the generator |
• | Loose or worn generator drive belt |
Automatic Transmission Controls Schematics
Transmission General Description
• | Circuit Testing |
• | Wiring Repairs |
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
DT-47825-20 Adapter Harness
⇒ | If not within the specified range, refer to Charging System Test. |
• | Terminal 1 |
• | Terminal 18 |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
• | Terminal 13 |
• | Terminal 15 |
⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. |
Important:
• | Perform the Service Fast Learn Adapts following all transmission related repairs. |
• | Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for control solenoid (w/body and TCM) valve assembly replacement, setup, and programming