Ignition Timing: 626
- Connect NGS scan tool to DLC-2 located under left side of instrument panel, left of steering column. See Fig 1 and Fig 4 . Ensure idle speed is correct. See IDLE SPEED & MIXTURE .
- Connect timing light to high-tension lead No. 1 and check timing. See Fig 5 . See IGNITION TIMING SPECIFICATIONS table. If ignition timing is not within specification, check CMP, CKP, TP and ECT sensors, neutral, clutch and transmission range switches. See SYSTEM & COMPONENT TESTING - MIATA, MILLENIA, MPV, PROTEGE, PROTEGE5 & 626 article. If all sensors and switches are okay, replace PCM.
IGNITION TIMING SPECIFICATIONS (DEGREES BTDC @ RPM)
| Application | With Ten Terminal Grounded | Without Ten Terminal Grounded | ||
|---|---|---|---|---|
| Miata | 9-11 @ 750-850 | 6-18 @ 750-850 | ||
| Millenia | ||||
| 2.3L | 6-8 @ 600-700 | 5-15 @ 600-700 | ||
| 2.5L | 9-11 @ 600-700 | 6-18 @ 600-700 | ||
| MPV | 4-16 @ 700-800 S |
N/A | ||
| Protege & Protege5 | 9-11 @ 650-750 | 6-18 @ 650-750 | ||
| 626 | ||||
| 2.0L | ||||
| A/T | N/A | 6-18 @ 500-800) | ||
| M/T | N/A | 6-18 @ 550-850 | ||
| 2.5L | N/A | 4-16 @ 550-750 | ||