Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA19904RUNNER 2D UTILITY, 3.0 V, AUTOMATICREPAIR AND DIAGNOSISGENERAL INFORMATIONENGINE PERFORMANCEMAP - ENGINE PERFORMANCE & MAINTENANCEENGINE PERFORMANCE AND MAINTENANCEELECTRONIC SPARK CONTROL MODULES
1990 Toyota 4Runner 2D Utility, 3.0 V, Automatic
Electronic Spark Control Modules
1990 Toyota 4Runner 2D Utility, 3.0 V, AutomaticSECTION Electronic Spark Control Modules
| Condition | Code | Procedure |
|---|---|---|
| Application incorrect | B | Require repair or replacement |
| Attaching hardware missing | C | Require replacement of hardware |
| Attaching hardware threads damaged | A | Require repair or replacement of hardware |
| Attaching hardware threads stripped (threads missing) | A | Require repair or replacement of hardware |
| Connector (Weatherpack type) leaking | A | Require repair or replacement |
| Connector broken | A | Require repair or replacement |
| Connector melted | A | Require repair or replacement |
|
NOTE:
Determine cause and correct prior to repair or replacement of part.
|
||
| Connector missing | A | Require repair |
| Contaminated | A | Require repair or replacement |
|
NOTE:
Determine source of contamination, such as engine coolant, fuel, metal particles, or water. Require repair or replacement of source.
|
||
| Leaking | B | Require repair or replacement |
| Malfunctioning | A | Require repair or replacement |
|
NOTE:
Includes inoperative, intermittent operation or failure to perform all functions.
|
||
| Missing | C | Require replacement |
| Terminal broken | A | Require repair or replacement |
| Terminal burned, affecting performance | A | Require repair or replacement |
|
NOTE:
Determine cause and correct prior to repair or replacement of part.
|
||
| Terminal burned, not affecting performance | 2 | Suggest repair or replacement |
| Terminal corroded, affecting performance | A | Require repair or replacement |
| Terminal corroded, not affecting performance | 2 | Suggest repair or replacement |
| Terminal loose, affecting performance | B | Require repair or replacement |
| Terminal loose, not affecting performance | 1 | Suggest repair or replacement |
| Threads damaged | A | Require repair or replacement |
| Threads stripped (threads missing) | A | Require replacement |
| Wire lead conductors exposed | B | Require repair or replacement |
| Wire lead corroded | A | Require repair or replacement |
| Wire lead open | A | Require repair or replacement |
| Wire lead shorted | A | Require repair or replacement |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.