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Idle Shutdown Vehicle Accessory/Ignition Bus Relay Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 338 PID: S087 SPN: 1267 FMI: 3/3 LAMP: Yellow SRT: |
Voltage detected on the idle shutdown vehicle accessory/ignition bus relay circuit when no voltage was being supplied by the ECM or an open circuit was detected. |
Vehicle accessories or ignition bus loads controlled by the idle shutdown vehicle accessory relay will not power up. |
 Idle Shutdown Vehicle Accessory/Ignition Bus Relay Circuit
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Circuit Description
The idle shutdown vehicle accessory/ignition bus relay is a device used to control vehicle accessories or ignition bus loads. Vehicle accessories or ignition bus loads will be shut down when the ECM shuts down the engine for excessive idle time.
Component Location
The location of the relay is dependent on the OEM. Use the OEM troubleshooting and repair manual.
Shop Talk
Typically, this fault code indicates a short circuit to battery or an open circuit.
Refer to Troubleshooting Fault Code t05-338.
Last Modified: 26-Oct-2010
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