Code
P1362
JAGUAR
P — Powertrain
Ignition Coil Cylinder 2 No Activation
AI status
Completed
Completed
100%
Causes
- Open or short in coil primary wiring (harness, connector, pins)
- Faulty ignition coil (internal open/short or failed driver in coil)
- ECU/PCM coil driver fault
- Blown fuse or faulty relay supplying coil power
- Poor battery/ignition supply voltage or ground
- Intermittent connector corrosion, water ingress, or mechanical damage
Symptoms
- Hard or rough idle
- Misfire felt at low or all engine speeds; possible check engine light
- Poor acceleration and reduced engine power
- Increased fuel consumption and failed emissions test
- Occasional or persistent engine starting problems
What to check
- Read freeze frame and live data for misfire counts and cylinder 2 status
- Check for related codes (misfire, crank/cam sensor, immobilizer)
- Visual inspection of coil 2, connector, wiring harness for damage or corrosion
- Verify battery voltage at ignition switch and at the coil connector
- Check fuses and ignition relays feeding the coil circuits
- Swap coil 2 with another cylinder’s coil to see if fault follows the coil
Signal parameters
- Primary coil resistance: typically 0.5–2.0 ohms for modern pencil coils (varies by part)
- Secondary coil resistance: commonly several thousand ohms (varies by part, check OEM spec)
- ECU coil command: usually a switched ground or low-side driver pulse; check with scope
- Expected coil command when cranking/running: pulsed output synchronized to cam/crank reference
- Battery voltage at coil supply while cranking: ~9–14V; significant drops indicate supply problem
- Dwell/command pulse width varies with engine speed and load (consult service data)
Diagnostic algorithm
- Retrieve VIN-specific freeze frame and all stored codes; note conditions when code set.
- Clear DTCs, start engine and see if P1362 returns; monitor misfire counters and live data.
- Perform visual inspection of cylinder 2 coil, harness, and connector for damage, corrosion, loose pins or water intrusion.
- Verify battery voltage at ignition coil power supply and check related fuses/relays. Repair any supply faults.
- With ignition OFF, unplug coil 2 connector and inspect pins. Wiggle harness while monitoring for intermittent faults.
- Measure coil 2 primary and secondary resistance and compare to OEM specifications. If out of range, replace coil.
- Swap coil 2 with a known-good coil from another cylinder. If the code or misfire follows the coil, replace the coil.
- Check for ECU coil command with a lab scope or appropriate test tool during cranking/running. If there is no command but wiring and coil are good, suspect ECU driver or inhibited control.
- Check continuity between ECU coil driver pin and coil connector (with power removed). Repair any opens/shorts to ground or battery.
- Verify camshaft and crankshaft position sensor inputs and timing. Correct any synchronization issues before replacing ECU/coil.
- If wiring and coil are confirmed good and ECU provides no command, consult manufacturer procedures for ECU testing/repair or immobilizer/security status before replacing PCM.
- After repairs, clear codes and road-test to verify P1362 does not return and engine runs normally.
Likely causes
- Damaged coil wiring or corroded connector at cylinder 2
- Failed ignition coil on cylinder 2
- Loss of power or ground to the coil circuit (fuse, wiring, relay)
- ECU output driver for coil 2 failed
- No crank/cam reference or disabled ignition due to security system
Fault status
Status
Ignition Coil Cylinder 2 No Activation — ECU did not activate coil for cylinder 2. Check coil, wiring, power/ground and ECU driver.
Repair difficulty: Medium
Diagnostic time: 1.0 to 3.0 hours
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