P1315 (blink 15, 3ZZ) on Toyota Corolla E120: IGNITER CIRCUIT MALFUNCTION(No.4)

Short answer: P1315 means “IGNITER CIRCUIT MALFUNCTION(No.4)”. The car’s computer has found a fault in the EFI 3ZZ-FE system and turns on the Malfunction indicator lamp (Check Engine). First check: workshop check order (RM821E): CHECK SPARK PLUG AND SPARK -> CHECK HARNESS AND CONNECTOR(ENGINE ECU−IGNITION COIL) -> CHECK ECU -> CHECK HARNESS AND CONNECTOR(IGNITION COIL−IGNITION SWITCH) (See.

Code

P1315 · blink 15

System

EFI 3ZZ-FE

Dashboard light

Malfunction indicator lamp (Check Engine)

Applies to

3ZZ-FE 1.6 (PK SE Saloon 1.6 2002-05 ZZE121)

Confidence

high (official Toyota RM821E)

Source

toyotamanuals.gitlab.io

Symptoms and when it is set

1. No IGF signal to engine ECU while engine is running

Likely causes

1. Open or short in IGF and IGT1 − 4 circuit from ignition coil with igniter; No.1 − No.4 ignition coil with igniter; Engine ECU

What to check, in order

1. Workshop check order (RM821E): CHECK SPARK PLUG AND SPARK -> CHECK HARNESS AND CONNECTOR(ENGINE ECU−IGNITION COIL) -> CHECK ECU -> CHECK HARNESS AND CONNECTOR(IGNITION COIL−IGNITION SWITCH) (See

Related on this car

• Ignition coil-on-plug failure / misfire
• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

← P1310/14 P1346/18 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.