My cruise control just stopped working. All the fuses are good, no shot brake lights, turn signals stil work. I don't know where else to look. Thanks, Gerry 2001 Chevy Suburban 4x4 LS
Re: My cruise control just stopped working. All the fuses...
Odometer cluster in my 2001 model suburban 1500/ goes on and off when i hit bumps or when i turn car off can you tell me whats wrong with it or do i just need another one.
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Ignition voltage is supplied to the cruise control switch from the 2-ampere CRUISE SW fuse located in the I/P fuse block - Fuse Block - I/P
Right side of the I/P, behind the access panel
If the fuse is good , take it to a qualified repair shop an have codes checked
DTC P0564
DTC P0567
DTC P0568
DTC P0608
DTC P0703
DTC P1574
DTC P2162
DTC P0564 00 : Cruise Control MultiFunction Switch Circuit
The cruise control switch is an input to the engine control module (ECM). The ECM monitors the cruise control set/coast and resume/accelerate switch signal circuit in order to detect when a cruise control function has been requested. The ECM detects a specific voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit when a cruise control function switch is activated, with each switch having a different predetermined voltage value.
Do the brake lights work ?
DTC P0703 00: Brake Switch Circuit 2
Circuit/System Description
The body control module (BCM) monitors the brake pedal position sensor. When the brake pedal is applied, the BCM detects a predetermined voltage signal. The BCM sends a GMLAN serial data message to the engine control module (ECM) / powertrain control module (PCM) indicating the status of the stop lamps.
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The voltage is supplied at all times through the STOP HAZ Fuse 1 to the TCC brake and cruise control release switch. The contacts in the TCC brake and cruise control release switch close when the brake pedal is depressed. The voltage is supplied through the hazard switch and the turn signal switch to the left and right stoplamps. The stoplamp will flash as a turn signal lamp if the turn signal switch is on. The stoplamp on the opposite side will serve as a stoplamp.
Crank & cam sensors would not have anything to do with it . Now if the vehicle didn't run (no spark or fuel injector pulse ) sure. The vehicle does start an run , Right ?
What engine does it have ?
Cruise Control Description and Operation (4.2L)
Cruise Control Description and Operation (5.3L)
Your vehicle has electronic throttle control (drive by wire ) do you know what this is. Complex electronic's invloved . The cruise control switches are located on the multifunction/turn signal lever.
The powertrain control module (PCM) monitors the signal circuits of the cruise control switches in order to determine when to capture and maintain the selected vehicle speed. The PCM uses the throttle actuator control (TAC) module motor in order to control the vehicle speed. For further information on the TAC System, refer to Throttle Actuator Control (TAC) System Description in Engine Controls - 4.2 L.
The PCM will engage and adjust vehicle speed based on the information received from the TAC module via the UART serial data link. For further information on the TAC system, refer to Throttle Actuator Control (TAC) System Description in Engine Controls - 4.8L, 5.3L, and 6.0L.
Your best bet , take your vehicle to a qualified repair shop that has the knowledge an diagnostic scanner to trouble shoot your problem .
Complex electronic's involved .definitely need a factory or professional type scan tool .
Brake light switch? The cruise and brake lights problems are likely related. The cruise control cuts out when you press on the brakes. I had a van where the cruse wouldn't engage. Then someone pointed out my brake lights were always on. It was the switch.
I would check the turn signal switch. The cruise and turn signal are on the same switch. The brake lights go through the switch before going to the brake lights. And the turn signals don't work with the ignition off.
Start with the simple and check the fuses and the Stop lamp switch. Check your brake lights, if they're not working, the cruise won't work either. If they're not working, check the fuse for them, if the fuse is fine, then take it into the dealer, there's been a recall issued on the brake switch, so it should get fixed for free. Cruise Control Disengaged The powertrain control module (PCM) disengages the cruise control operation based on the signals from the following switches:
* The stop lamp switch * The TCC brake/cruise release switch * The clutch release switch, if equipped * The cruise control On/Off switch
The TCC brake/cruise release switch and the stop lamp switch are mounted on the brake pedal bracket. When the brake pedal is applied, the normally closed TCC brake/cruise release switch opens and the normally open stop lamp switch closes. The PCM detects a low signal voltage on the TCC brake/cruise release switch signal circuit and a high signal voltage on the stop lamp switch signal circuit. When the clutch pedal is applied, the normally closed clutch release switch opens and the PCM detects zero voltage on the CCP switch signal circuit. The vehicle speed stored in the memory of the PCM will be erased when the cruise control On/Off button is turned OFF, or the ignition switch is turned OFF.
The Cruise Control System will disengage when the PCM detects that a driver override function has been active for approximately 60 seconds .
When the Cruise Control System is disengaged, the PCM sends a class 2 message to the instrument panel cluster (IPC) in order to deactivate the cruise control indicator.
Cruise Control Inhibited The powertrain control module (PCM) inhibits the cruise control operation when any of the following conditions exist:
* A cruise control related DTC has been set. * The vehicle speed is less than 40.2 km/h (25 mph) . * The vehicle is in PARK, REVERSE, NEUTRAL, or 1st gear. * The engine RPM is too low. * The engine RPM is too high, with fuel cut off. * The vehicle speed is too high, with fuel cut off. * The system voltage is not between 9 volts and 16 volts . * The Traction Control System (TCS) is active for more than 2 seconds . Thank you for using Fixya and start with replacing the stop lamp switch. Even though the brake light work, it;s been known for that switch to cause your issue. that's way there was a recall for it.
first check the fuse for the stop light circuit, if it's good, check your bulbs, it's possible they are all burned out! take one of them out, swap in a new one, and see if it lights. If not, get a wiring diagram and start checking for your powers and grounds. Take a look at the stop light switch on the brake pedal. If it's no good, there is a good chance that your cruise control may not work properly either. Good luck.
There are 3 places on the Rav4 where fuses can be located and checked. for the cuise control.
The back of the cruise control stacking switch has been know to fail (fall apart) and Toyota issued a TSB with replacement switch.
if it is the fuses then they most likely are related to cruise control system: Stop, Dome, Gauge and Igniton
The interior fuse box
The main engine fuse box (by brake fluid)
Cruise control ECU is under the glovebox.
Cruise control actuator is under hood (by driver side brake fluid/booster)Throttle position sensor (to detect if your foot is on gas pedal)
Cruise control switch on the clutch pedal too (if you have 5spd manual)
Brake lights are the deactivate signal for the cruise control
use a scanner to check the abs system . most of the time the abs brakes and traction control system work together. your cruise control . unit has a servo motor .in front right fender well. check the fuse and relay also the cruise control brake release switch. and the brake light switch.if all is good you have a cruise control module problems. dealer ship job.
Check your brake light switch at the pedal. This controls the lights and disengages the cruise when stopping. I'd look there before I go anywhere else. There may just be a wire loose. Could be a simple fix.
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