TwinTurbo.NET: Nissan 300ZX forum - Starter relay bypass
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Subject Starter relay bypass
     
Posted by Buzz on April 24, 2003 at 4:48 AM
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Message The common indication of a bad starter relay is a clicking sound that appears to come from under the dash area on the driver's side. This is a fairly common problem. The typical warning sign of impending relay failure is a momentary delay in starter turning when starter switch is actuated. The following procedure will let you to test for a bad relay and allow you to start the engine after removing a bad relay.

Procedure:

1. First you need to find it. It's located behind the wheel well liner on the driver's side. For more detailed info look in tech for starter relay replacement.

2. Remove the blue starter relay. It is hooked up to two connectors. You need to insert a jumper between the two female terminals in the LARGE connector. Leave the small connector open. If the starter relay is bad, this will effectively bypass it and allow a normal start if the relay was at fault. I made a jumper using a wire stub and two male spade connectors. A paper clip might work as a jumper if it makes a solid connection.

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3. How this works. Normally the ignition switch actuates the low current solenoid in the relay that controls higher current switch in the relay. This protects the ignition switch and the relay takes the abuse. With the bypass in place the ignition switch will be taking that abuse. Long term use of the bypass could lead to eventual ignition switch failure. Limited use of the bypass is therefore considered prudent.

Note: Starter relay, clutch relay, inhibitor relay are all different names for the same relay.

     
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