Cruise Control (4-cyl) — Acura TSX II (2008-2014)

Component Location Index

Cruise Control

Scheme 6

Scheme 6: Component Location Index

Symptom Troubleshooting Index

Symptom	Diagnostic procedure	Also check for
Cruise control cannot be set	Check 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 on	Do 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 on	Do the gauge control module self-diagnostic function (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/cancel button is pressed	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/cancel switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Set speed does not cancel when the brake pedal is pressed	Do the brake pedal position switch test (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT ). 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 (engine RPM stays high) when the clutch pedal is pressed (M/T model)	Do the clutch pedal position switch test (see CLUTCH PEDAL POSITION SWITCH TEST ). Do the cruise control input test (see CRUISE CONTROL INPUT TEST ). Test the clutch pedal position switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).	Short to ground in the BRN wire Faulty clutch pedal position switch
Set speed does not cancel when the cruise control main button is pressed	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 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 pressed	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 cancel switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Set speed does not resume when the resume/cancel 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/cancel switch signal input. Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).
Set speed does not resume when the resume/cancel button is pressed (with the cruise control main switch turned on, and set speed temporarily canceled by pressing the clutch pedal) (M/T model)	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/cancel 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 on	Check the No. 6 (7.5 A) fuse in the passenger's under-dash fuse relay box. Check 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 wire

CRUISE CONTROL SYMPTOM TROUBLESHOOTING

Scheme 7

Scheme 7: Circuit Diagram

Cruise Control Input Test

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

Connect the HDS to the DLC (see step 2 on «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-4-cyl) ).
Turn the ignition switch to ON (II).
Make sure the HDS communicates with the vehicle and the ECM/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-4-cyl__dlc-circuit-troubleshooting) ).
Go to PGM-FI, and check for DTCs (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-4-cyl) ).
Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.
If the input tests prove OK, replace the ECM/PCM (see «ECM/PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-4-cyl__ecmpcm-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 tested	Test condition	Parameter: Desired result	Possible cause if result is not obtained
Brake pedal position switch signal	Brake pedal pressed, then released	CRUISE BRAKE SW/IDLE STOP SW should indicate OPEN when the brake pedal is pressed and CLOSE when the brake pedal is released.	Faulty brake pedal position switch Blown No. 7 (15 A) fuse in the driver's under-dash fuse/relay box An open in the wire between the ECM/PCM and the brake pedal position switch A wire shorted to ground or power between the ECM/PCM and the brake pedal position switch
Clutch pedal position switch signal (M/T model)	Clutch pedal pressed, then released	SHIFT/CLUTCH SW should indicate ON when the clutch pedal is pressed and OFF when the clutch pedal is released.	Faulty clutch pedal position switch An open in the wire between the ECM and the clutch pedal position switch A wire shorted to ground between the ECM and the clutch pedal position switch Poor ground G302
Transmission range switch signal (A/T model)	Shift lever in D and S	SHIFT/CLUTCH SW should indicate ON in P, R, and N and OFF in D and S.	Faulty transmission range switch An open in the wire between the PCM and the transmission range switch A wire shorted to ground between the PCM and the transmission range switch Poor ground G101
Cruise control main switch signal	Cruise control main button pressed and released	CRUISE MASTER (MAIN) SW should indicate ON when the cruise control main button is pressed and OFF when the cruise control main button is released.	Faulty cruise control main switch An open in the wire between the gauge control module and the cruise control main switch A wire shorted to ground between the gauge control module and the cruise control main switch
Set switch signal	Decel/set button pressed and released	CRUISE SET SW should indicate ON when the decel/set button is pressed and OFF when the decel/set button is released.	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
Resume switch signal	Resume/cancel button pressed and released	CRUISE RESUME SW should indicate ON when the resume/cancel button is pressed and OFF when the resume/cancel button is	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
Cancel switch signal	Cancel button pressed and released	CRUISE CANCEL SW should indicate ON when the cancel button is pressed and OFF when the cancel button is released.	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
Cruise control indicator signal	Start 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 control.	CRUISE INDICATOR should indicate ON when the cruise control is set and OFF when the cruise control is canceled.	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

CRUISE CONTROL INPUT TEST 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 8

Scheme 8: Cruise Control Combination Switch Test/Replacement

Scheme 9

Remove the driver's airbag (see «REMOVAL»(/acura/tsx/ii-2008-2014/remont/airbag/#srs-supplemental-restraint-system-4-cyl__removal) ).
Remove the steering trim (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/tsx/ii-2008-2014/remont/manual-power-steering/#steering-4-cyl) ).
Remove the select/reset/information switch (A), then remove the cruise control combination switch (B).
Check for continuity between the terminals in each cruise control combination switch position according to the table: If there is continuity, and it matches the table, but the cruise control combination switch failure occurred on the cruise control input test, check and repair the wire harness on the switch circuit. If there is no continuity in one or more positions, replace the cruise control combination switch.
Install the cruise control combination switch in the reverse order of removal.

Scheme 10

Scheme 10: M/T model

Disconnect the clutch pedal position switch 3P connector (A).
Check for continuity between the terminals according to the table: If the continuity is not as specified, replace the clutch pedal position switch (see «CLUTCH PEDAL POSITION SWITCH TEST»(/acura/tsx/ii-2008-2014/remont/cruise-control-systems/#cruise-control-4-cyl) ), and adjust the pedal height (see «CLUTCH PEDAL, CLUTCH PEDAL POSITION SWITCH, AND CLUTCH INTERLOCK SWITCH ADJUSTMENT»(ref-475402-S19490623162012052300000) ). If OK, connect the clutch pedal position switch 3P connector.

Scheme 11

Scheme 12

Scheme 12: M/T model

Disconnect the clutch pedal position switch 3P connector (A).
Loosen the locknut (B), then remove the clutch pedal position switch (C).
Install the clutch pedal position switch, and adjust the pedal height (see «CLUTCH PEDAL, CLUTCH PEDAL POSITION SWITCH, AND CLUTCH INTERLOCK SWITCH ADJUSTMENT»(ref-475402-S19490623162012052300000) ).

Cruise Control (4-cyl) Acura TSX II