Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fault Codes 2/44296: No Signal From Right Front Wheel Sensor
1995 Saab 9000 CS, StandardSECTION Fault Codes 2/44296: No Signal From Right Front Wheel Sensor
- If ANTI LOCK light is off, go to step 2). If ANTI LOCK light is on, a fault is present in ABS system. Connect ISAT to Green diagnostic connector under passenger's front seat. Check for ABS system fault codes. If FAULT CODES 24222, 44222, 2422B, 4422B, 24252, 44252, 24292, or 44292 are obtained from ABS system, diagnose these codes first. See RETRIEVING CODES (TC/ABS SYSTEM) under DIAGNOSIS & TESTING. If none of these fault codes are present, go to next step.
- Check digital signal at ASR ECU terminal No. 9 (Blue wire) with a logic probe. With ignition on, a steady pulse should be present. This is a test pulse. Frequency of pulse should increase as wheel is spun by hand.
- If correct pulse signal is not found, check wiring between TC/ABS ECU and ASR ECU for open or short circuits to ground or voltage. Disconnect TC/ABS ECU and ASR ECU. Measure resistance between ASR ECU connector terminals No. 9 (Blue wire) and No. 13 (Black wire). No continuity should be present.
- Turn ignition on. Check for shorts to voltage by measuring voltage between ASR ECU connector terminals No. 9 (Blue wire) and No. 13 (Black wire). Correct reading is zero volts.
- Turn ignition off. Connect breakout box to TC/ABS ECU connector. Measure resistance between ASR ECU connector terminal No. 9 and breakout box pin No. 11. Continuity should be present.
- If voltage or continuity measurements are not to specification, check Blue wire and connectors for an open circuit. If voltage or continuity measurements are to specification, and an intermittent fault was indicated, recheck all readings while wiggling Blue wire, especially at connectors.
- If no faults can be found, clear all fault codes and test drive car. Recheck for stored fault codes in both ABS system and ETS system. If ETS fault codes reoccur, install a known good ASR ECU and road test vehicle.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.