1993 AT to MT conversion RHD NA1:
Most posts on ALB/ABS issues relate warning light ON and how to turn it off. The problem we are having is lack of ABS warning light when the system is clearly non-functional. Am stumped, hoping to get some direction.
Thanks in advance!
Most posts on ALB/ABS issues relate warning light ON and how to turn it off. The problem we are having is lack of ABS warning light when the system is clearly non-functional. Am stumped, hoping to get some direction.
- The ABS system has the common ticking/stuck valves so plan is to upgrade to the NA2 system. But a non-functional ABS warning light is a safety issue.
- It's not the bulb. The ABS light cycle check on/off at start up works fine.
- There are no codes, with SCS shorted - ABS yellow warning light stays on solid.
- When the handbrake is purposely left on in attempt to trigger the TCS and ABS, only the TCS warning comes on. When the TCS triggers, the ABS shuts down at exactly the same time.
- Have checked whether the pressure sensor (yellow/ black – orange connector) has been shorted to disable the ABS warning light and it has not.
- Unplugging the ABS pump connector did not trigger an ABS warning. With the connector disconnected and ignition on the ABS light still checks/cycles on then off. No ABS light during test drive either. System still had some pressure in it so ABS worked a couple times (with pump disconnected) then shut down.
Thanks in advance!