| Parameter | Specification | |-----------|---------------| | Ignition timing (10–15A-FE ECU) | 10° BTDC @ idle (with diagnostic jumper TE1–E1) | | Spark plug type (standard) | ND K16R-U / NGK BKR5EYA | | Spark plug gap | 0.8 mm | | Spark plug thread reach | 19 mm |
The 5A-FE utilizes Toyota’s Diagnostic System. For earlier OBD-I models, diagnostic codes are read by jumpering terminals TE1 and E1 in the diagnostic connector. For OBD-II models (post-1996), a scan tool is required.
Years went by, and John's Corolla continued to run reliably, thanks in part to his diligent maintenance and repairs guided by the "Toyota 5A-FE Engine Service Manual". The engine continued to hum along, its performance and fuel efficiency remaining impressive even as the car racked up high mileage.