Nissan Sentra Service Manual: Eps branch line circuit
Diagnosis procedure
1.Check connector
- Turn the ignition switch off.
- Disconnect the battery cable from the negative terminal.
- Check the terminals and connectors of the eps control unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal? Yes >> go to 2.
No >> repair the terminal and connector.
2.Check harness for open circuit
- Disconnect the connector of EPS control unit.
- Check the resistance between the eps control unit harness connector terminals.
Is the measurement value within the specification? Yes >> go to 3.
No >> repair the eps control unit branch line.
3.Check power supply and ground circuit
Check the power supply and the ground circuit of the eps control unit. Refer to stc-22, "diagnosis procedure".
Is the inspection result normal? Yes (present error)>>replace the eps control unit. Refer to stc-39, "removal and installation".
Yes (past error)>>error was detected in the eps control unit branch line.
No >> repair the power supply and the ground circuit.
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Disconnect the battery cable from the negative terminal.
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Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
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