Code
P1179
DAEWOO
P — Powertrain
ETS MAGNETIC POLE - NOT SYNCH
Views:
UK: 3
EN: 4
RU: 5
AI status
Completed
Completed
100%
Causes
- Damaged or missing teeth on reluctor/tone wheel
- Faulty magnetic pickup (sensor) — internal failure or demagnetized element
- Incorrect sensor air gap or misalignment
- Wiring harness damage, corrosion, or poor connector contact
- Electrical interference or short to power/ground
- Faulty control module or software issue
Symptoms
- MIL/Check Engine (or ETS/traction) lamp illuminated
- Intermittent or no speed/position reading from the affected sensor
- Engine stalling, rough idle, misfire or limp-home mode (depending on system)
- ABS/traction or other system warnings if sensor used for those functions
- Intermittent faults that vary with engine speed or vehicle speed
What to check
- Read freeze frame and live data with a scan tool; note when code sets (crank, run, speed range)
- Visually inspect sensor, reluctor/tone wheel and mounting for damage, debris or missing teeth
- Inspect sensor connector and wiring for corrosion, damaged insulation, or loose pins
- Measure sensor resistance and compare with specification (manufacturer data)
- Back-probe sensor output with multimeter/oscilloscope while cranking and running
- Check sensor air gap and mechanical alignment to spec
Signal parameters
- Magnetic pickup produces AC voltage; amplitude increases with speed (typical usable range ~0.2–4 V AC depending on design)
- Waveform: regular sinusoidal or pulsed AC waveform with uniform spacing corresponding to reluctor teeth
- Frequency: proportional to shaft/wheel speed; missing or irregular pulses indicate tooth damage or synchronization issues
- Sensor DC resistance: varies by sensor type — check vehicle service data for correct ohms
Diagnostic algorithm
- Retrieve DTC(s) and freeze frame data; clear codes and attempt to re-create fault under same conditions.
- Visually inspect sensor assembly and reluctor ring for physical damage, missing teeth, debris or oil/metal contamination.
- Inspect wiring harness and connector for corrosion, bent pins, broken wires, or poor ground. Repair any issues found.
- Check sensor air gap and mounting alignment; adjust or re-secure to factory specification.
- Measure sensor resistance; then back-probe sensor output with multimeter while cranking. If reading is marginal or absent, suspect sensor.
- Use an oscilloscope to verify waveform shape, amplitude and tooth-to-tooth timing while cranking/running. Look for dropped or shifted pulses.
- If wiring and sensor test OK but waveform abnormal, inspect reluctor ring for damaged/missing teeth or eccentric mounting. Replace/repair as required.
- If sensor and reluctor are good, check ECU input circuitry and grounding. If necessary, substitute a known-good sensor or harness segment to isolate module fault.
- After repair, clear codes and verify fault does not return under previously failing conditions.
Likely causes
- Physical damage to reluctor/tone wheel (missing/deformed teeth)
- Failed magnetic pickup sensor (open, short or weak output)
- Connector corrosion or broken wire in sensor circuit
- Excessive air gap between sensor and reluctor
- Mounting bracket bent or loose causing mispositioning
Fault status
Status
ETS magnetic pole not synchronized — magnetic pickup/tone wheel signal irregular or missing
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email