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Wednesday, September 2nd, 2020 AT 12:03 PM
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SATURNTECH9
- MECHANIC
- 30,869 POSTS
So you got a code 25?
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ABS light is on?
STRETAR
- MEMBER
- 6 POSTS
Correct, what does the code 25 stand for?
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Wednesday, September 2nd, 2020 AT 12:03 PM
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KJEDI56
- MEMBER
- 1 POST
- 1990 CHEVROLET SILVERADO
- 16,000 MILES
The ABS light on my p/u has come on and won't go off. It blinks a code of 4 short and one long light, then repeats the sequence.
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Wednesday, September 2nd, 2020 AT 12:03 PM
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ASEMASTER6371
- MECHANIC
- 52,797 POSTS
PROCEDURE
Diagnostic Trouble Codes (DTC) 's can be displayed by jumping terminals "A" and "H" of the Data Link Connector and observing the flashing of the "BRAKE" warning light. This should only be done when the brake lamp is "ON".
The terminals must be jumped for about 20 seconds before the code will begin to flash. Count the number of short flashes starting from the long flash. Include the long flash as a count. Sometimes the first count sequence will be short. However, subsequent flashes will be accurate. If there is more than one failure, only the first recognized code will be retained and flashed.
NOTES:
DTC's 6, 9, and 10 will only turn the "BRAKE" lamp on while the fault exists. These are soft codes faults and can only be read with the Tech 1 scan tool.
Do not jump terminals "A" to "H" if the "BRAKE" lamp is not on. Jumping the terminals with the "BRAKE" lamp off will set a false DTC 9. This will turn the "BRAKE" lamp on and disable the antilock system.
As you can see, you may need a scan tool to track down the failure.
Roy
Diagnostic Trouble Codes (DTC) 's can be displayed by jumping terminals "A" and "H" of the Data Link Connector and observing the flashing of the "BRAKE" warning light. This should only be done when the brake lamp is "ON".
The terminals must be jumped for about 20 seconds before the code will begin to flash. Count the number of short flashes starting from the long flash. Include the long flash as a count. Sometimes the first count sequence will be short. However, subsequent flashes will be accurate. If there is more than one failure, only the first recognized code will be retained and flashed.
NOTES:
DTC's 6, 9, and 10 will only turn the "BRAKE" lamp on while the fault exists. These are soft codes faults and can only be read with the Tech 1 scan tool.
Do not jump terminals "A" to "H" if the "BRAKE" lamp is not on. Jumping the terminals with the "BRAKE" lamp off will set a false DTC 9. This will turn the "BRAKE" lamp on and disable the antilock system.
As you can see, you may need a scan tool to track down the failure.
Roy
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Wednesday, September 2nd, 2020 AT 12:03 PM
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STRETAR
- MEMBER
- 6 POSTS
Can the ABS sensor need to be cleaned?
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Wednesday, September 2nd, 2020 AT 12:03 PM
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SATURNTECH9
- MECHANIC
- 30,869 POSTS
It left front wheel speed sensor or circuit open. Unplug the left front speed sensor and measure the ohms reading of it. Compare it to the right front one let me know what you find?
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Wednesday, September 2nd, 2020 AT 12:03 PM
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CSCHWAN91
- MEMBER
- 1 POST
- CHEVROLET SILVERADO
I have a 1997 Chevrolet Silverado Z71 with a 5.7 liter V8. For the past year, my ABS light comes on at various times and stays on until I turn off the truck and at times that doesn't work. When the light comes on, the cruise does not work, as well as, the fan blower and electronic four-wheel drive. Just wondering if this is a ignition switch problem.
I just came across a new problem. Since the weather has gotten cold, my transmission is jumping out of overdrive at 60 mph. Could this be the powertrain control module?
I just came across a new problem. Since the weather has gotten cold, my transmission is jumping out of overdrive at 60 mph. Could this be the powertrain control module?
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Wednesday, September 2nd, 2020 AT 12:03 PM
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BMRFIXIT
- MECHANIC
- 19,053 POSTS
.
Check the electric feed
sound like you're loosing the power supply look for a broken wire or loose conection
Check the electric feed
sound like you're loosing the power supply look for a broken wire or loose conection
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Wednesday, September 2nd, 2020 AT 12:03 PM
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