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Cruise Control (v6) Acura TSX II

Cruise Control Systems 5 illustrations ~394 words

Scheme 1

Scheme 1: Component Location Index
Scheme 1: Component Location Index

Symptom Troubleshooting Index

SymptomDiagnostic procedureAlso check for
Cruise control cannot be setCheck for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ). Check the No. 7 (15 A) fuse in the driver's under-dash fuse/relay box. Do the cruise control combination switch test (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ).Open circuit, loose or disconnected terminals: GRY, YEL, LT BLU or GRY wire Faulty gauge control module
Cruise control can be set, but the cruise main indicator does not come onDo the gauge control module self-diagnostic function procedure (see SELF-DIAGNOSTIC FUNCTION ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the cruise control main switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).Faulty gauge control module
Cruise control can be set, but the cruise control indicator does not come onDo the gauge control module self-diagnostic function procedure (see SELF-DIAGNOSTIC FUNCTION ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the cruise control indicator signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).Faulty gauge control module
Vehicle does not accelerate accordingly when the resume/accel button is pressedDo the cruise control combination switch test (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the resume/accel switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Set speed does not cancel when the brake pedal is pressedDo the brake pedal position switch test (see BRAKE PEDAL POSITION SWITCH TEST ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the brake pedal position switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).Short to power on the ORN wire Faulty brake pedal position switch
Set speed does not cancel when the cruise control main button is pressedDo the cruise control combination switch test (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the cruise control main switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Set speed does not cancel when the cancel button is pressedDo the cruise control combination switch test (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the cancel switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Set speed does not resume when the resume/accel button is pressed (with the cruise control main switch turned on, and set speed temporarily canceled by pressing the brake pedal)Do the cruise control combination switch test (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the resume/accel switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Light switch turned on, the cruise control combination switch illumination does not come onCheck the No. 6 (7.5 A) fuse in the passenger's under-dash fuse/relay box. Do the cruise control combination switch test (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ). Check the audio remote switch (see AUDIO REMOTE SWITCH TEST ).Open circuit, loose or disconnected terminals: GRY, GRN/RED or RED wires

SYMPTOM TROUBLESHOOTING INDEX

Scheme 2

Scheme 2: Circuit Diagram
Scheme 2: Circuit Diagram

Cruise Control Input Test

Note. Always make sure that you have the latest HDS software.

  1. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
  2. Turn the ignition switch to ON (II).
  3. Make sure the HDS communicates with the vehicle and the PCM. If it does not communicate, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dlc-circuit-troubleshooting) ).
  4. Check for and troubleshoot any DTCs (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
  5. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.
  6. If the input tests prove OK, replace the PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).

Note. Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs, flex the circuit wires, and note if any of the test results change.

Signal to be testedTest conditionParameter: Desired resultPossible cause if result is not obtained
Cruise control system switch statusCruise control combination switch buttons are not pressedCRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list should indicate DEFAULT when the cruise control combination switch buttons are not pressed.If the CRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list indicates SIGNAL LOST, check as shown. Check for DTCs in the PGM-FI system and do the appropriate troubleshooting Faulty gauge control module An open in the wire between the gauge control module and the cruise control combination switch A short to power in the wire between the gauge control module and the cruise control combination switch when the illumination switch is turned on If the CRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list indicates SIGNAL SHORT, check as shown. Check for DTCs in the PGM-FI system and do the appropriate troubleshooting Faulty gauge control module Faulty cruise control combination switch A short to ground in the wire between the gauge control module and the cruise control combination switch If the CRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list indicates a different status, check for a faulty cruise control combination switch.
Cruise control main button is pressedCRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list should indicate MAIN SW when the cruise control main button is pressed.
Cancel button is pressedCRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list should indicate CANCEL SW when the cancel button is pressed.
Decel/set button is pressedCRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list should indicate SET SW when the decel/set button is pressed.
Res/accel button is pressedCRUISE CONTROL SYSTEM SWITCH STATUS in the HDS data list should indicate RESUME SW when the res/accel button is pressed.
Brake pedal position switch signalBrake pedal pressed, then releasedCRUISE BRAKE SW/IDLE STOP SW should indicate OPEN when the brake pedal is pressed and CLOSE when the brake pedal is released.Faulty cruise control combination switch Blown No. 7 (15 A) fuse in the driver's under-dash fuse/relay box An open in the wire between the PCM and the brake pedal position switch A wire shorted to ground or power between the PCM and the brake pedal position switch
Cruise control indicator signalStart the engine, press the cruise control main button on and drive the vehicle above 25 mph (40 km/h) with the cruise control set and cancel the cruise controlCRUISE INDICATOR should indicate ON when the cruise control is set and OFF when the cruise control is cancelled.Faulty gauge control module Faulty cruise control combination switch An open in the wire between the gauge control module and the cruise control combination switch A wire shorted to ground between the gauge control module and the cruise control combination switch

TEST CONDITION CHART

Cruise Control Combination Switch Test/Replacement

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service.

Scheme 3

Scheme 3: Cruise Control Combination Switch Test/Replacement
Scheme 3: Cruise Control Combination Switch Test/Replacement

Scheme 4

Scheme 4
Scheme 4

Scheme 5

Scheme 5
Scheme 5
  1. Remove the driver's airbag (see «DRIVER'S AIRBAG REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/airbag/#srs-supplemental-restraint-system-v6__drivers-airbag-replacement) ).
  2. Remove the steering trim (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/tsx/ii-2008-2014/remont/manual-power-steering/#steering-v6) ).
  3. Remove the select/reset/information switch (A), then remove the cruise control combination switch (B).
  4. Measure the resistance between cruise control combination switch 12P connector terminal No. 6 and No. 12 according to the table. NOTE: If there is no resistance in one or more positions, replace the cruise control combination switch. 12P CONNECTOR TERMINAL TABLE Position Resistance OFF About 2.2 kohms Cruise control main (PRESSED) About 60 ohms Cancel (PRESSED) About 190 ohms Decel/set (PRESSED) About 450 ohms Res/accel (PRESSED) About 900 ohms
  5. Check for continuity between cruise control combination switch 12P connector terminal No. 3 and No. 9 according to the table. NOTE: If there is no continuity, replace the cruise control combination switch. (Scheme 5): Checking Continuity Between Cruise Control Combination Switch 12P Connector Terminal No. 3 And No. 9
  6. Install the cruise control combination switch in the reverse order of removal.

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