Instrument Cluster

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PINPOINT TEST 27: DTC B1318 - BATTERY VOLTAGE LOW

Normal Operation

The instrument cluster sets DTC B1318 in continuous memory and on-demand if the instrument cluster detects battery voltage below 9 volts on the keep alive voltage input, circuit (Y/R).

Possible Causes
- Wiring, terminals or connectors
- High circuit resistance
- Instrument cluster

Diagnostic Procedure

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. See Battery Disconnect.

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