For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P1835: Kickdown Switch Signal Performance - CAN SignalCircuit/System Description
The transmission control module (TCM) receives the kickdown switch signal via CAN bus The TCM needs this signal to select the appropriate gear and to choose the correct shift pattern.
Conditions for Running the DTC
P1835
| • | The ignition voltage is between 10.2 V and 15.5 V. |
| • | The engine speed is greater than 400 RPM for 2 s. |
| • | The transmission is not in emergency mode. |
| • | Accessory ON for more than 3 s. |
| • | TCM communication is normal. |
| • | DTC U0100 is not set. |
Conditions for Setting the DTC
P1835
| • | TCM receives accelerator kick down detected is "Active". |
| • | Accelerator effective position is less than 65% for 2 s continuously. |
Action Taken When the DTC Sets
P1835
| • | DTCs P1835 is Type D DTC. |
| • | None. |
Conditions for Clearing the DTC
P1835
| • | DTC P1835 is Type D DTC. |
| • | No fault decision for 5 min continuously. |
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics
Connector End View Reference
Electrical Information Reference
Description and Operation
Transmission Component and System Description
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Verify DTC U0100 is not set.
| ⇒ | If DTC U0100 is set, diagnose this first. |
Circuit/System Testing
Dynamic Test
Ignition ON, observe the scan tool APP Angle parameter while depressing the accelerator pedal. The value should grow with the more depressed accelerator pedal until 100% with fully depressed pedal.
| ⇒ | If the value is not within the specified range, replace the K20 Engine Control Module (ECM). |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | TCM, refer to Control Module References for replacement, setup and programming. |
| ⇒ | Perform the Transmission Adaptive Functions. |
| • | ECM replacement, refer to Engine Control Module Replacement for LDK, Engine Control Module Replacement for LBS, LBX, LBY, Engine Control Module Replacement for LBW.. |
| • | ECM, refer to Engine Control Module Programming and Setup for setup and programming. |
