Z31/SENSORS/IUS php

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Z31 Idle-up solenoid (Non-Turbo only)

The Idle-up solenoid valve is attached to the intake collector. The solenoid valve actuates to stabilize idle speed when engine load is heavy, such as when using electrical accessories, power steering, or the oil pump.

WARNING - Do this modification at your own risk. We Are not responsable for any issues of your own doing.

Common Problems

• Stalling when Accessories are running

Troubleshooting

• Refer to the diagram below for step-by-step troubleshooting procedures.
• Follow the wiring checks and voltage measurements as illustrated.
• If a step fails, verify wiring and component continuity.