Monday, February 24, 2020

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2585

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2585

DTC Descriptors

DTC P0658

- Solenoid High Control Circuit Group 1 Low Voltage

DTC P0659

- Solenoid 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 of the control solenoid valve assembly which has no serviceable parts.

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

* The engine speed is greater than 500 RPM for 5 seconds.

* Ignition voltage is 8.6 volts or greater.

* High side driver 1 is enabled.

* DTC P0658 has not set this ignition.

P0659

* DTC P0659 has not set this ignition.

* Ignition voltage is 8.6 volts or greater.

* Ignition switch transitions from OFF to run position.

Conditions for Setting the DTC

P0658

The TCM detects an internal open or short to ground on the high side driver 1 for 1 second.

P0659

The TCM detects an internal short to voltage on the high side driver 1 circuit for 1 second after engine start.

Action Taken When the DTC Sets

P0658

* DTC P0658 is a Type A DTC.

* The TCM turns OFF high side driver.

* 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.

* The TCM inhibits the TAP Up/Down function.

* The TCM inhibits manual shifting of forward gears.

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, low/reverse clutch and the 4-5-6 clutch assemblies.

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