2010 Cadillac Truck SRX AWD V6-3.0L Page 1556
Circuit/System Description
The transmission control module (TCM) within the control solenoid valve assembly continuously monitors the system voltage on the ignition
voltage circuit. 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 damage. These DTCs detect high or low TCM voltage for an extended
period.
Conditions for Running the DTC
P0562
* Ignition voltage was 6.0 volts or greater and has not dropped below 2.0 volts.
* Engine speed is 1,200 RPM or greater.
P0563
Ignition voltage was 6.0 volts or greater and has not dropped below 2.0 volts.
P2534
* The engine is running.
* Ignition voltage was 6.0 volts or greater and has not dropped below 2.0 volts.
Conditions for Setting the DTC
P0562
The TCM detects system voltage is 11 volts or less for 4 seconds.
P0563
The TCM detects system voltage is 18 volts or greater for 10 seconds.
P2534
The TCM detects ignition voltage between 2.0 volts and 6.0 volts for 7 seconds or greater with the engine running.
Action Taken When the DTC Sets
P0562 and P0563
DTCs P0562 and P0563 are Type C DTCs.
P2534
* 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 torque converter clutch (TCC) OFF.
* The TCM allows the transmission to operate in reverse and fifth range.
* The TCM inhibits Tap Up/Down function.
* The TCM inhibits manual shifting of forward gears.
Conditions for Clearing the DTC
* DTCs P0562 and P0563 are Type C DTCs.
* DTC P2534 is a Type A DTC.
Diagnostic Aids
* Observe the driver information center (DIC) messaging that would indicate the electrical system requires service.
* Running the engine with a battery charger attached may cause DTC P0563 to set.
* Inspect for the following conditions:
- Loose or damaged terminals at the generator
- Loose or worn generator drive belt
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