P0659
DTC P0658 or P0659
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P0658
- Actuator High Control Circuit Group 1 Low Voltage
DTC P0659
- Actuator High Control Circuit Group 1 High Voltage
Diagnostic Fault Information
Circuit/System Description
The transmission control module (TCM) high side driver 1 is located inside the control solenoid valve assembly which has no serviceable components. The high side driver 1 provides power to the TCM pressure control solenoids and shift solenoids. This fault is handled inside the TCM and no external circuits are involved.
Conditions for Running the DTC
P0658
* High side driver 1 is enabled.
* DTC P0658 is not set.
P0659
* DTC P0659 is not set.
* Ignition transitions from OFF to ON.
Conditions for Setting the DTC
P0658
TCM detects an internal open or short to ground in the high side driver 1 circuit for 1 second.
P0659
TCM detects an internal short to voltage on the high side driver 1 circuit for 1 second.
Action Taken When the DTC Sets
P0658
* DTC P0658 is a Type A DTC.
* TCM turns the high side driver OFF.
* TCM commands all solenoids OFF.
* TCM commands the TCC OFF.
* TCM commands maximum line pressure.
* TCM freezes transmission adaptive functions.
* TCM inhibits neutral idle.
* TCM inhibits the Tap Up/Tap Down function.
* TCM inhibits manual shifting of forward gears.
* TCM defaults the transmission to 5th gear and reverse.
* TCM enables torque management.
P0659
DTC P0659 is a Type C DTC.
Conditions for Clearing the DTC
* DTC P0658 is a Type A DTC.
* DTC P0659 is a Type C DTC.
Diagnostic Aids
When DTC P0658 sets, the line pressure control solenoid, and pressure control solenoids 2 and 3, will default to maximum pressure. This results in maximum line pressure to the 3-5 reverse clutch, and low/reverse clutch, when reverse is selected, and the 4-5-6 clutch, when forward is selected.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
* Component Connector End Views Fuel Pump and Level Sensor Assembly
* Inline Harness Connector End Views X100
Description and Operation
* Transmission General Description Transmission General Description
* Transmission Component and System Description Transmission Component and System Description
* Electronic Component Description Electronic Component Description
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Special Tools
DT-48616-10 - Adapter Harness
For equivalent regional tools, refer to Special Tools 6T30/6T40/6T45/6T50 - Automatic Transmission.
Circuit/System Verification
1. Ignition ON.
2. Verify with a scan tool the High Side Driver 1 parameter displays ON or Enabled.
• If the High Side Driver 1 parameter displays OFF
Refer to Circuit/System Testing below.
• If the High Side Driver 1 parameter displays ON or Enabled
3. Engine Running, gear selector lever in Park position.
4. Verify with a scan tool the following test status parameters display OK.
* High Side Driver 1 Circuit High Voltage Test Status
* High Side Driver 1 Circuit Open Test Status
* High Side Driver 1 Circuit Low Voltage Test Status
• If any test status parameter displays Fault or Malfunction
Refer to Circuit/System Testing below.
• If all test status parameters display OK
5. After performing the above steps, verify that the DTC does not reset by operating the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions you observe from the Freeze Frame/Failure Records data. If the vehicle passes the Circuit/System Verification procedure, then STOP. Do not perform the Circuit/System Testing or Component Testing as this may result in an unnecessary part replacement. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement Service and Repair.
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 1 with 1.4L - LCU, 1.6L - LDE or LFJ, 1.8L - LUW) Control Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 1 with 1.4L - LCU, 1.6L - LDE or LFJ, 1.8L - LUControl Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 2 with 1.4L - LUV) Control Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 2 with 1.4L - LUV). The Q8 control solenoid valve and transmission control module assembly must be externally cleaned of all debris.
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect the DT-48616-10 - harness between the vehicle wire harness X1 14-way transmission electrical connector, and the Q8 control solenoid valve assembly electrical connector, ignition ON.
5. Verify with a scan tool the following test status parameters displays, OK.
* High Side Driver 1 Circuit High Voltage Test Status
* High Side Driver 1 Circuit Open Test Status
* High Side Driver 1 Circuit Low Voltage Test Status
• If any test status parameter displays Fault or Malfunction
Replace the Q8 control solenoid valve assembly.
• If all test status parameters display OK
6. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Refer to Control Module References Control Module References for control solenoid valve assembly replacement, programming and setup.
* Perform the Transmission Adaptive Values Learn Programming and Relearning following all transmission related repairs.