MIATA, Protege & Protege5
NOTE:
New Generation Star (NGS) scan tool or equivalent is used to perform following procedures.
- Connect scan tool to DLC-2 located under left side of instrument panel. See Fig 2 and Fig 4 . Connect fused jumper wire between terminals TEN and GND at DLC-1 in engine compartment. See Fig 3 .
- Ensure idle speed is correct. See IDLE SPEED under IDLE SPEED & MIXTURE. Connect timing light to high-tension lead No. 1. Start engine and allow it to idle. Check timing. See IGNITION TIMING SPECIFICATIONS table. See Fig 5 .
- If ignition timing is not within specification, check CMP, CKP, TP and ECT sensors and transaxle/transmission range switch. See SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 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 |
| MPV | 4-16 @ 700-800 | N/A |
| Protege & Protege5 | 9-11 @ 650-750 | 6-18 @ 650-750 |