Diagnostic/Load test results

Relying on the help of A.I.’s it’s humbling to realize that human direct interaction is the most advanced technology, Help~
1.Want go into Ready Mode

U0129

U0293

U0104

U1002

U1100

U110B

U0142

U0155

U0101

U0164

U0293

U0100

U0129

U0131

U0293


B27A6

B1273

B2324

SYLVANIA - H11 XtraVision - High Performance Halogen Headlight Bulb Voltage 12V, Wattage 55, Load time 4 minutes


Hybrid Battery:

Load

Before/After

1/7.97 /6.95

2/8.24/7.44

3/7.80/6.99

4/7.80/ 6.90

5/7.77/6.94

6/7.90/7.01

7/7.83/7.00

8/7.89/7.00

9/7.93/7.12

10/7.93/6.99

11/7.93/7.04

12/7.80/6.90

13/7.96/7.14

14/7.8/7.03

15/7.74/6.01

16/7.86/6.12

17/7.90/6.96

18/7.91/7.08

19/7.85/6.95

20/7.95/7.14

21/7.93/6.99

22/7.86/5.54

23/8.03/7.14

24/7.98/7.03

25/7.96/7.02

26/7.95/7.10

27/7.99/7.06

28/7.97/7.19


4/17/24
Recheck

1/7.57

2/7.84

3/7.56

4/7.55

5/7.55

6/7.58

7/7.56

8/7.55

9/7.58

10/7.59

11/7.58

12/7.55

13/7.63

14/7.56

15/7.06

16/7.13

17/7.54

18/7.58

19/7.56

20/7.58

21/7.58

22/7.24

23/7.64

24/7.56

25/7.59

26/7.58

27/7.62

28/7.61

 

Diagnostic

 

Complete sentence? Where I come from the school to prison pipeline is big business/

# Copilot : Certainly! Here’s a professional rewrite of the issues and actions taken, formatted with bullet points:

Initial Issue and Diagnostic Actions:

• Encountered a problem with the skid indicator, which activated the Internal Combustion Engine (ICE) drove for months taking off the battery cable to reset
• Toyota performed a J0V update; the system functioned correctly for approximately one week.
• Attempted to have Toyota honor a recall for an inverter converter replacement without success.

Subsequent Issues and Troubleshooting Steps:

• The vehicle failed to start; replaced the inverter converter with a pre-owned unit, which temporarily resolved the issue.
• Experienced repeated power cut-offs; depleted and replaced the 12V battery multiple times.
• Purchased a Noco charger and booster due to persistent battery drain.*
• Noted adverse effects of humidity on the system; inspected the hybrid battery and found corroded connections.
• Replaced the wiring harness due to poor connections

Further Diagnostic and Repair Attempts:

• Transitioned from cranking without starting to a lack of ‘ready’ mode indicator light./ not driven or started for 6 months
• Performed ECU resets using paper clips on Pins 4 and 13, as well as jumper cable resets.
• Accidentally crossed wires, resulting in blown fuses, which were subsequently replaced.
• Utilized an Etekcity Measure Up multimeter to test fuses, relays, and power supply to the ECU.
• Inspected wire harnesses and device connections with the vehicle powered off; discovered possible issues at the Power Control Module (PCM) with two of the four connectors showing no response.
• Observed that the brake lights were not functioning.

Component Replacement and Observations:

• Attempted replacement of the PCM and Smart Key box, which did not yield positive results; reverted to the original components.
• Noticed the orange accessory light blinking before shutdown.
• After reconnecting the Tire Pressure Monitoring System (TPMS), the parking light remained continuously illuminated.

Blown Fuses Identified:

• (4/23/24 30 amp fuse under the hood.
• Audio System (Navigation Receiver Type)
• Navigation System (Navigation Receiver Type)
• Parking Assist (Rear View Monitor) (Navigation Receiver Type)
• 4/23/24 4/24/24 410 amp ECU-IG No.2 fuse.
• Audio System (Radio & Display Receiver Type) Automatic Glare-Resistant EC Mirror
• Cruise Control
• Dynamic Radar Cruise Control
• Engine Control
• EPS
• Garage Door Opener
• Headlight Cleaner
• Hill-Start Assist Control
• Hybrid System
• Navigation System (Navigation Receiver Type)
• Navigation System (Radio & Display Receiver Type)
• Parking Assist (Rear View Monitor) (Navigation Receiver Type) Parking Assist (Rear View Monitor) (Radio & Display Receiver Type) Pre-Collision System
• Roof Sunshade System
• Shift Control System
• Tire Pressure Warning System
• TRAC
• Vehicle Proximity Notification System VSC

List of Replaced Parts:

1. Prius 2010-2015 Hybrid Battery Wire Wiring Harness Cell Strip HV Cable Relay Bus Bar./Ebay
2. Bus Bars made of C11000 Copper Alloy, plated with 6μm thick Nickel./Amazon
3. 2012-2017 Toyota Prius Hybrid Battery Voltage Sensor (Part No. 89892-47080) by DENSO./Ebay
4. 2010-2015 Toyota Prius/V 12V Battery Positive Terminal Fuse (140A)./Ebay
5. 2012-2015 TOYOTA PRIUS V START/STOP Parking Button Switch Dash Bezel/Immobilizer (Part No. 55446-47070)./Ebay
6. 2010-2011 Toyota Prius Hybrid Inverter Converter./Ebay
7. 125 Fusible link 90982-08297/ Toyota
8. Waterpump/Toyota

 

I’m thinking maybe the brake booster is bad , would it prevent it from going into Ready mode ?
BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)

Troubleshooting:

(Blows fuse 10 amp ECU -IG no.2 systems

Audio System (Radio & Display Receiver Type) Automatic Glare-Resistant EC Mirror

Cruise Control

Dynamic Radar Cruise Control

Engine Control

EPS

Garage Door Opener

Headlight Cleaner

Hill-Start Assist Control

Hybrid System

Navigation System (Navigation Receiver Type)

Navigation System (Radio & Display Receiver Type)

Parking Assist (Rear View Monitor) (Navigation Receiver Type) Parking Assist (Rear View Monitor) (Radio & Display Receiver Type) Pre-Collision System

Roof Sunshade System

Shift Control System

Tire Pressure Warning System

TRAC

Vehicle Proximity Notification System VSC)



U0129

Lost Communication With Brake System Control Module Current and History indication /


Brake booster with master cylinder (skid control ECU)/ ECM/ ( all set *2)

*2: DTC U0123, U0124, U0126 and U0293 are not stored when DTC U0073 has already been stored.

(Set *1) Power management control ECU (set *1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.)


Power source control live:

Power management control ecu (power source central)

U0129 Skid control ECU Communication stop mode (set)

U0293 Lost communication with HV ECU


Condition: The power management control ECU does not receive vehicle speed data from the brake booster with master cylinder assembly (skid control ECU) for 3 seconds or more.


No brake lights

 

List of Replaced Parts:

1. Prius 2010-2015 Hybrid Battery Wire Wiring Harness Cell Strip HV Cable Relay Bus Bar./Ebay
2. Bus Bars made of C11000 Copper Alloy, plated with 6μm thick Nickel./Amazon
3. 2012-2017 Toyota Prius Hybrid Battery Voltage Sensor (Part No. 89892-47080) by DENSO./Ebay
4. 2010-2015 Toyota Prius/V 12V Battery Positive Terminal Fuse (140A)./Ebay
5. 2012-2015 TOYOTA PRIUS V START/STOP Parking Button Switch Dash Bezel/Immobilizer (Part No. 55446-47070)./Ebay
6. 2010-2011 Toyota Prius Hybrid Inverter Converter./Ebay
7. 125 Fusible link 90982-08297/ Toyota
8. Waterpump/Toyota

 

Question, do these cables coming from hybrid battery going to the engine have a voltage? The modules are reading around 7.50 with the two in the middle 7.22 . But when I check with the multimeter the orange cables I get nothing and I tried checking the modules and the cables with a

KZYEE KM10 Power Circuit Probe I get nothing ?

 

By the way the accessory mode was not engaged

 

I mean the do the cables bolted down have a voltage?

 

Ok what is one of my confusions is Techstream was
4/23/24 P308A

Circuit Low

Hybrid Battery Voltage Sensor All

Circuits Low


4/23/24 P0B65

Hybrid Battery Voltage Sensor "I"

P308A

Circuit Low


4/23/24 P0B4C

Hybrid Battery Voltage Sensor

"D" Circuit Low


4/23/24 P0A80

Replace Hybrid Battery Pack


4/23/24 P0B65

Hybrid Battery Voltage Sensor "I"

Circuit Low


4/23/24 P0B4C

Hybrid Battery Voltage Sensor

"D" Circuit Low
But they went away I guess after changing out the harness,sensor and bus bars .
So now its giving
Techstream
No Communication with HV
Engine and ect / U0293
Lost Communication with Hybrid
Vehicle Control System/Power source control ?

 

So the bolts will only have a voltage or provide any reading when the car is fully started ?