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DTC 12-01:
Low/High VBU Voltage (Regular diagnosis)
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Turn the ignition switch OFF.
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Connect the HDS to the data link connector (DLC).
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Turn the ignition switch ON (II).
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Check the VBU in the DATA LIST with the HDS.
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Is the voltage at 9.2−17.4 V?
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YES
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-
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Check for loose wires or poor connections. If the connections are good, the system is OK at this time.■
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NO
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-
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Check the No. 1 (70 A) fuse in the under-hood fuse/relay box.
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YES
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Reinstall the fuse, and go to
Step 6
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NO
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Replace the fuse, and recheck. If the fuse is blown, check for a short to body ground in this fuse circuit.■
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Turn the ignition switch OFF.
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Disconnect the EPS control unit connector A (2P) and connector D (28P).
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Measure the voltage between the EPS control unit connector A (2P) terminal No. 2 and body ground.
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Is there battery voltage?
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YES
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-
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Check for loose terminals in the EPS control unit A (2P) connector, and repair if necessary. If no poor connections are found,
replace the EPS control unit.
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NO
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-
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Repair open in the wire between the EPS control unit and under-hood fuse/relay box.■
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