[Lewther]

I have a 2004 Sequoia 4x4 that has the "VSC TRAC" and "VSC OFF" light on all the time. No other lights are on. I have a FSM and shorted the OBDII connector at CG and Tc to read the code. The VSC TRAC light blinked an "11" C1310 code. This is a short/open circuit issue in the brake booster. I replaced the Brake booster. When I pulled the old booster out it had several ounces of brake fluid that had leaked from the master cylinder. I purchased a new master cylinder. Installed new booster and Master cylinder. bleed the brake lines, connected everything back.

Next I shorted Tc and CG on the OBDII. Start engine and Cleared the code by pressing the brake pedal 8 times within 5 seconds. The original "11" code was gone. Got a new code "53"from the blinking VSC Track light. Engine is starting easy but idling low. Will cut off I don't give it some gas at startup. I checked the vacuum lines and the booster. All ok.
The "53" code is "Malfunction in communication with ECM" This is either an issue with the "ECM" or "Translate ECU" or the connector between these two.
Need special equipment to trouble shoot. So I am stuck.

I can not calibrate the Yaw, deceleration, steering sensors until all codes are clear.

Any advice? Replace ECM?

 

[asc08]

With all of the posts on this forum about issues with the Tundra, I don't recall ever having seen one where the ECU was actually bad. It may be, but I certainly would not replace it at this point.

Get a code reader, or get the code read on a code reader.

Check all of your wiring harnesses that you can get to for proper connection and damage. There have been a number of people who have had animals chew through wires, causing all sorts of issues.

 

[Lewther]

Update. Still Throwing VSC Error code "11"

Still getting the VSC TRAC" and "VSC Off" lights on after I start up and drive a minute or two. I can short Tc to CG (ground) on the OBDII connector and read the blinking code on the VSC Trac light. I have solved the DTM error code 53 by replacing the "Skid Control Unit" with a used one (same year, part #, and 4X4 just like mine). Skid control part # 89541-0C062. This is also the same part number for the recall of the 2003 Sequoias. I found a Toyota Technical Service Bulletin # BR006-06 that has an updated procedure to calibrate the Skid control unit. Apparently the 2004 Sequoia FSM (Printed in 2003) calibration is obsolete.
Here is a summary of the procedure minus using the special Toyota scanning tool (Toyota Diagnostic Tester TOY220036). I think this works but not sure.

Clear the VSC error codes by:
1. Short Tc and CG with a paper clip. Tc is pin # 13 and CG is pin# 4 on the OBDII connector.
2. Start engine. VSC Track light will be blinking the VSC error code.
3. Press brake pedal 8 times within 5 seconds. VSC Trac light will go out for a few seconds and then blink fast. Codes are clear .
4. Turn off engine and remove jumper.

To perform the Master Cylinder pressure, Yaw rate and Deceleration sensor zero point calibration. 4X4 procedure:
A. Short Ts and CG on the OBDII connector with a paper clip. (Ts is at pin # 12, CG is at pin #4) Note: The 2003 FSM is incorrect so use these pin #s.

B. Make sure shift lever is in "P" position.

C. Start engine.

D. Keep vehicle stationary on a level surface for 4 seconds or more. Press the Center Differential lock switch 3 times within 3 seconds. Do not press brake pedal.

E. VSC buzzer under left side of dash should sound for 3 seconds. Buzzer indicates successful calibration.

Now perform steering angle sensor Zero point calibration:
1. Disconnect the wires that were shorting Ts and CG.
2. Drive vehicle above 28 mph for a minute or so.
3. Done. Note you can not confirm the calibration unless you have a Toyota diagnostics tester but this procedure should do the trick.

I am still getting the VSC TRAC light blinked an "11" code (brake booster circuit issue or ABS circuit issue) with the VSC Track blink pattern. Note: this is not an engine check light code and the OBDII reader will not pick up this Skid control error. This error is indicated by the VSC track light blinking when Tc and CG are shorted. Checked and double checked the brake booster resistance in the connector and the wires are all good as the procedure in the FSM explains. Resistance on the Active Brake Booster solenoid Circuit is 1.5 ohm (Spec is 1.1 to 1.7 ohm). Used three different millimeters and all said about 1.5 ohms. Yes...measuring 1.5 ohms is tricky on the tiny pins.
Voltage at the Skid control ECU is good and same pins from the Active Brake Booster solenoid Circuit read 1.5 ohms to ECU. Bottom line is all FSM procedure checks are passed and skid control ECU is replaced, and new aftermarket (Cardone brand) brake booster. I am still throwing this dang VSC error code "11" after a few minutes of driving. I am really stuck on this one. Any other 2004 4x4 Sequoia owners with this experience?

 

[tyzwvu]

Update. Still Throwing VSC Error code "11"

Still getting the VSC TRAC" and "VSC Off" lights on after I start up and drive a minute or two. I can short Tc to CG (ground) on the OBDII connector and read the blinking code on the VSC Trac light. I have solved the DTM error code 53 by replacing the "Skid Control Unit" with a used one (same year, part #, and 4X4 just like mine). Skid control part # 89541-0C062. This is also the same part number for the recall of the 2003 Sequoias. I found a Toyota Technical Service Bulletin # BR006-06 that has an updated procedure to calibrate the Skid control unit. Apparently the 2004 Sequoia FSM (Printed in 2003) calibration is obsolete.
Here is a summary of the procedure minus using the special Toyota scanning tool (Toyota Diagnostic Tester TOY220036). I think this works but not sure.

Clear the VSC error codes by:
1. Short Tc and CG with a paper clip. Tc is pin # 13 and CG is pin# 4 on the OBDII connector.
2. Start engine. VSC Track light will be blinking the VSC error code.
3. Press brake pedal 8 times within 5 seconds. VSC Trac light will go out for a few seconds and then blink fast. Codes are clear .
4. Turn off engine and remove jumper.

To perform the Master Cylinder pressure, Yaw rate and Deceleration sensor zero point calibration. 4X4 procedure:
A. Short Ts and CG on the OBDII connector with a paper clip. (Ts is at pin # 12, CG is at pin #4) Note: The 2003 FSM is incorrect so use these pin #s.

B. Make sure shift lever is in "P" position.

C. Start engine.

D. Keep vehicle stationary on a level surface for 4 seconds or more. Press the Center Differential lock switch 3 times within 3 seconds. Do not press brake pedal.

E. VSC buzzer under left side of dash should sound for 3 seconds. Buzzer indicates successful calibration.

Now perform steering angle sensor Zero point calibration:
1. Disconnect the wires that were shorting Ts and CG.
2. Drive vehicle above 28 mph for a minute or so.
3. Done. Note you can not confirm the calibration unless you have a Toyota diagnostics tester but this procedure should do the trick.

I am still getting the VSC TRAC light blinked an "11" code (brake booster circuit issue or ABS circuit issue) with the VSC Track blink pattern. Note: this is not an engine check light code and the OBDII reader will not pick up this Skid control error. This error is indicated by the VSC track light blinking when Tc and CG are shorted. Checked and double checked the brake booster resistance in the connector and the wires are all good as the procedure in the FSM explains. Resistance on the Active Brake Booster solenoid Circuit is 1.5 ohm (Spec is 1.1 to 1.7 ohm). Used three different millimeters and all said about 1.5 ohms. Yes...measuring 1.5 ohms is tricky on the tiny pins.
Voltage at the Skid control ECU is good and same pins from the Active Brake Booster solenoid Circuit read 1.5 ohms to ECU. Bottom line is all FSM procedure checks are passed and skid control ECU is replaced, and new aftermarket (Cardone brand) brake booster. I am still throwing this dang VSC error code "11" after a few minutes of driving. I am really stuck on this one. Any other 2004 4x4 Sequoia owners with this experience?

Did you solve the 11 code issue? I also have a 04 4*4 Sequoia and I am trying to fix my trac code 11, 43 and 53 and abs code 47 issue.

My symptoms are 1) brake light comes on sometimes and will disappear after engine restart and it doesn't look like it affect driving; 2) there were twice that vsc off vsc trac and brake lights all came on all together and the 1st time ABS kept kicking in with no reason. ABS stopped acting up after a couple of minutes with all 3 lights on. Lights all went off after engine restart. All 3 lights came on again a couple of days ago but it didn't affect driving.