Post by jr on Oct 26, 2023 9:20:37 GMT 10
I have been getting an intermittent ABS/Antiskid fault alarm in my 200 Series.
It slowly got more and more regular and when it happens the ABS is disarmed so it needed attention.
Using my code reader, the fault was C-1425 ANTI-LOCK BRAKE SYSTEM.
Recommended to check: Brake switch, wire loom, plugs and master cylinder CPU/solenoid block which is mounted on the side of the master cylinder.
I removed the brake switch to check it’s open close contacts but NO! it’s electronic with a five-pin plug. After some research found out that the switch had a. permanent positive b. ignition positive c. earth d&e. two outlets one goes high and the other goes low.
The switch has a magnet that passes under two Hall effect IC’s so I needed to set up a test on the bench to test it. The switch did what I thought it should do so could it be CPU/solenoid’s.
Under side note the two IC's covered with a blue sealant, could that sealant be interfering with the magnet and IC outputs?
Only way to check the CPU/solenoids is to replace it and at $3000.00 plus (12 hyd/solenoids) I decided to take the vehicle to Mr, Toyota hopping they had seen the fault before and would know what the problem was. $190.00 they charged to read the code with their code reader and concluded the first step is to replace the stop light switch.
They will replace the switch for $290.00, now I had checked the cost of a switch, $70.00 so they wonted $220.00 to fit the switch which takes about two minutes, so I said order the switch and I would fit it.
After two-weeks with a new stop light switch, touch wood the fault has not returned and as it occurred every second day I am 98% sure the problem is solved.
If only we could go back to the simple life when there was a brake light switch with contacts and a single brake master cylinder which only ever required a single piston rubber to replace at 20c for a new rubber.
Just turned my super 77” LG OLED TV off and what the hell!
Up comes “Pixel Clean Required”
Isn’t Technology great.
JR
It slowly got more and more regular and when it happens the ABS is disarmed so it needed attention.
Using my code reader, the fault was C-1425 ANTI-LOCK BRAKE SYSTEM.
Recommended to check: Brake switch, wire loom, plugs and master cylinder CPU/solenoid block which is mounted on the side of the master cylinder.
I removed the brake switch to check it’s open close contacts but NO! it’s electronic with a five-pin plug. After some research found out that the switch had a. permanent positive b. ignition positive c. earth d&e. two outlets one goes high and the other goes low.
The switch has a magnet that passes under two Hall effect IC’s so I needed to set up a test on the bench to test it. The switch did what I thought it should do so could it be CPU/solenoid’s.
Under side note the two IC's covered with a blue sealant, could that sealant be interfering with the magnet and IC outputs?
Only way to check the CPU/solenoids is to replace it and at $3000.00 plus (12 hyd/solenoids) I decided to take the vehicle to Mr, Toyota hopping they had seen the fault before and would know what the problem was. $190.00 they charged to read the code with their code reader and concluded the first step is to replace the stop light switch.
They will replace the switch for $290.00, now I had checked the cost of a switch, $70.00 so they wonted $220.00 to fit the switch which takes about two minutes, so I said order the switch and I would fit it.
After two-weeks with a new stop light switch, touch wood the fault has not returned and as it occurred every second day I am 98% sure the problem is solved.
If only we could go back to the simple life when there was a brake light switch with contacts and a single brake master cylinder which only ever required a single piston rubber to replace at 20c for a new rubber.
Just turned my super 77” LG OLED TV off and what the hell!
Up comes “Pixel Clean Required”
Isn’t Technology great.
JR
