Pinpoint Test F : Transmission Solenoid Power Control
WARNING: This page is about a different variant/trim than selected.
- F1 RETRIEVE AND RECORD ALL DTCS
- Using the diagnostic scan tool, retrieve all DTCs.
Is DTC P0657 present?
Yes GO to F2. No GO to Symptom Chart . - F2 CHECK THE TRANSMISSION SOLENOID POWER CONTROL CIRCUIT
- Ignition OFF.
- Disconnect: Transmission Vehicle Harness C1520A .
- Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
- Ignition ON.
- Measure the voltage
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C1520A-5 CET25 (BU/GN) - Ground
Is the voltage greater than 9.8 volts?
Yes GO to F5. No GO to F3. - F3 CHECK THE TRANSMISSION SOLENOID POWER CONTROL CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: TCM C1750 .
- Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
- Measure the resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C1520A-5 CET25 (BU/GN) C1750-2 CET25 (BU/GN)
Is the resistance less than 3 ohms?
Yes GO to F4. No REPAIR the circuit. - F4 CHECK THE TRANSMISSION SOLENOID POWER CONTROL CIRCUIT FOR A SHORT TO GROUND
- Measure the resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C1520A-5 CET25 (BU/GN) - Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to F5. No REPAIR the circuit. - Measure the resistance
between.
- F5 CHECK THE SOLENOID BODY LEADFRAME FOR AN OPEN
- Remove the solenoid body leadframe, refer to Solenoid Body Leadframe . Inspect for metal shavings on the exposed metal contacts or other components and clean the solenoids and solenoid body leadframe terminals.
- Measure the solenoid body leadframe resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit 5 Solenoid Power Supply 5 (all) Solenoid Power Supply (all)
Is the resistance less than 3 ohms?
Yes INSTALL a new TCM. REFER to Transmission Control Module (TCM) . PROGRAM the TCM with the latest calibration level. PERFORM the Solenoid Body Strategy Download procedure. REFER to Solenoid Body Strategy Download . No INSTALL a new solenoid body leadframe. REFER to Solenoid Body Leadframe .
