What does ABS Code 26 mean on a 1996 Ford Bronco or F-Series truck?

Per this manual page, Code 26 (Rear Axle Inlet Solenoid Valve concern) indicates an open circuit to the anti-lock hydraulic control unit or anti-lock brake electronic control module, an open or shorted valve coil, or internal anti-lock brake electronic control module damage.

Which circuits should be inspected in Pinpoint Test E step E6 for ABS Code 25?

Inspect Circuits 532 (O/Y) and 498 (PK) along their entire length from the sensor connector to the harness connector of the anti-lock brake electronic control module for chafing or damage that could cause an open or shorted condition.

What special tools are called out in step E6?

Rotunda Breakout Box 014-00322 (or equivalent) and Rotunda Breakout Box Adapter with Overlay 007-00103 (or equivalent). Note: the ABS is DISABLED while the breakout box is installed.

What do you do if wiring integrity is verified in step E6?

If Yes, GO to E4 for system OK verification. If No, GO to E3.

Which vehicles does this service manual page cover?

The footer states it applies to the 1996 F-150, F-250, F-350, Bronco, and F-Super Duty (Body, Chassis manual, July 1995).

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1996 Ford Bronco/F-150 ABS Code 25 & 26 Pinpoint Tests E6/F - Solenoid Valve

1996 Ford 4-Wheel Anti-Lock Brake Pinpoint Test E/F continued, Code 25 wiring integrity verification, page 06-09B-37

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Continuation of 4WABS Pinpoint Test E (Code 25) plus start of Test F (Code 26) covering wiring-integrity inspection of circuits 532 ON and 498 PK from sensor to ABS module connector.

AI caption June 2017 · Photo 315 of 413

This page (06-09B-37) from the 1996 Ford F-150, F-250, F-350, Bronco, and F-Super Duty Body/Chassis service manual (dated July 1995) covers 4-wheel Anti-Lock Brake System (ABS) diagnosis and testing. It concludes Pinpoint Test E for the Front Right Outlet Solenoid Valve concern (ABS Code 25) with step E6, 'Possible Conditions Not Checked.' Step E6 assumes wiring integrity has been verified and the anti-lock hydraulic control unit and electronic control module have been replaced; it directs the technician to inspect Circuits 532 (O/Y) and 498 (PK) for chafing or damage that could cause opens or shorts, and to install Rotunda Breakout Box 014-00322 with Overlay Adapter 007-00103 to repeat Step E1 while driving, watching for continuity changes. A 'Yes' answer routes to E4 for system OK verification; 'No' routes back to E3. The page also introduces Pinpoint Test F for the Rear Axle Inlet Solenoid Valve concern (Code 26), defining Code 26 as an open circuit to the anti-lock hydraulic control unit or electronic control module, an open or shorted valve coil, or internal module damage. The lower portion of the scan shows only bleed-through from the reverse page. The document notes the ABS is disabled while the breakout box is installed.

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Frequently asked questions

What does ABS Code 26 mean on a 1996 Ford Bronco or F-Series truck?: Per this manual page, Code 26 (Rear Axle Inlet Solenoid Valve concern) indicates an open circuit to the anti-lock hydraulic control unit or anti-lock brake electronic control module, an open or shorted valve coil, or internal anti-lock brake electronic control module damage.
Which circuits should be inspected in Pinpoint Test E step E6 for ABS Code 25?: Inspect Circuits 532 (O/Y) and 498 (PK) along their entire length from the sensor connector to the harness connector of the anti-lock brake electronic control module for chafing or damage that could cause an open or shorted condition.
What special tools are called out in step E6?: Rotunda Breakout Box 014-00322 (or equivalent) and Rotunda Breakout Box Adapter with Overlay 007-00103 (or equivalent). Note: the ABS is DISABLED while the breakout box is installed.
What do you do if wiring integrity is verified in step E6?: If Yes, GO to E4 for system OK verification. If No, GO to E3.
Which vehicles does this service manual page cover?: The footer states it applies to the 1996 F-150, F-250, F-350, Bronco, and F-Super Duty (Body, Chassis manual, July 1995).