3.
Has a problem been found ?
YES
a.
Repair as necessary and then go to ＂Verification of Vehicle Repair＂procedure.
NO
a.
Go to ＂Charging System Inspection＂procedure.
Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
Has a problem been found ?
YES
Repair as necessary and then go to ＂Verification of Vehicle Repair＂procedure.
NO
Go to ＂Charging System Inspection＂procedure.
Ignition ＂OFF＂
Disconnect EPS CM connector.
Engine ＂ON＂, headight and heatwire ＂ON＂.
Measure voltage between terminal ＂1＂of EPS CM harness connector ＂E78＂and chassis ground while maintaining ENG RPM 2,500RPM over 2 minutes.
Specification : More than 10 [V]
Is the measured voltage within specifications?
YES
Go to ＂Ground Circuit Inspection＂procedure.
NO
Check for damaged harness and poor connection between the battery terminal(+) and terminal ＂1＂of EPS CM harness connector ＂E78＂.
Repair as necessary and then go to ＂Verification of Vehicle Repair＂ procedure.
Ignition ＂OFF＂.
Disconnect EPS CM connector.
Measure resistance between terminal ＂1＂of EPS CM harness connector＂E79＂and chassis ground
Specification : Approx. 1.0 Ω
Is the measured resistance within specifications?
YES
Substitute with a known-good steering column & EPS unit assembly and check for proper operation. If the problem is corrected,replace steering column & EPS unit assembly and then go to ＂Verification of Vehicle Repair＂procedure.
NO
Check for open or contact resistance in ground harness. Repair as necessary and then go to ＂Verification of Vehicle Repair＂procedure.
Engine ＂ON＂
headight and heatwire ＂ON＂.
Measure voltage between terminal (+) and (-) of battery while maintaining ENG RPM 2,500RPM over 2 minutes.
Specification : More than 10 [V]
Is the measured voltage within specifications?
YES
Go to ＂Power Circuit Inspection＂procedure.
NO
Check that the tension of drive velt, ENG RPM, fuse, terminal of battery, all terminals of alternator are in good condition and Check for damaged harness and poor connection between alternator and battery.
Repair as necessary and then go to ＂Verification of Vehicle Repair＂procedure.
