2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1772

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1772

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P1701

- Transmission Fluid Pressure Valve Position Switch Indicates Park/Neutral With Drive Ratio

Diagnostic Fault Information

Circuit/System Description

The shift control solenoid assembly (SLC1, SLC2, SLC3, SLB1) and the line pressure control solenoid (SLT) are installed on the front valve body.

The solenoids linearly control hydraulic pressure in response to signals output from the transmission control module (TCM). SLC1, SLC2, SLC3,

SLB1 controls hydraulic pressure to the clutches (C1, C2, C3) and brake (B1) for smooth shifting. According to each shift control solenoid

assembly, the transmission shifts from 1st gear into 6th gear and vice versa. When the vehicle is stopped in range D, the transmission enters a

neutral condition by releasing the clutch C1. By reducing drag loss of the torque converter, the load on the engine is lightened, fuel economy is

enhanced, and idling vibration is reduced. As a fail-safe function, if any shift control solenoid assembly abnormality occurs, the TCM will disable

the current to the solenoids.

Conditions for Running the DTC

P1701

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D or R range.

* Transmission control module (TCM) communication is normal.

* Transmission Fluid temperature is more than 0掳C (32掳F).

* Output speed is less than 500 RPM.

Conditions for Setting the DTC

P1701

Difference between engine speed and transmission input speed is below 150 RPM and not in 1st or reverse gear detected. Determined after 3 time

lasting more than 0.8 s.

Action Taken When the DTC Sets

P1701

* DTC P1701 is Type B DTC.

* No self learning function

* No neutral control

* No adaptive shift

* The TCM allows the vehicle to operate only in second gear and "R" range after a stop.

Conditions for Clearing the DTC

P1701

* DTC P1701 is Type B DTC.

* Measured gear ratio deviates less than 4% from expected ratio.

Diagnostic Aids

When attempting to set solenoid electrical DTCs, ensure the TCM is warmed up and the transmission is operated in 2nd gear long enough to ensure

a 3掳C (5掳F) increase in TCM substrate temperature. This will place the TCM under the optimal conditions to test solenoid electrical DTCs.