3.
Has a problem been found ?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ 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 ?
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Charging System Inspection" procedure. |
Connect GDS to Data Link Connector(DLC).
Engine "ON".
Turn on all electrical load such as headlamp, rear window defogger, and A/C.
Maintain engine speed at about 2500 RPM.
Monitor "Battery Voltage" parameter on "Current Data" with GDS.
Specification : Approx. 14.5V
Fig.1) Normal battery voltage parameter on Engine speed of approx. 2200RPM
Is parameter displayed within specification?
| ▶ Go to "Power Circuit Inspection" procedure. |
| ▶ Check the tension of drive belt, 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. |
Ignition "OFF".
Disconnect HECU connector.
Ignition "ON".
Measure voltage between power terminal of HECU harness connector and chassis ground.
Specification : B+
Is measured value within specification?
| ▶ Go to "Ground Circuit Inspection" procedure. |
| ▶ Repair open or short in power circuit between battery and HECU harness connector and then go to "Verification of vehicle Repair" procedure. |
Ignition "OFF".
Disconnect Battery (-) terminal.
Disconnect HECU connector.
Measure resistance between ground terminal of HECU harness connector and chassis ground.
Specification : Approx. below 1Ω
Is measure value within specification?
| ▶ Substitute with known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure. |
In case of replacing HECU, perform following procedures.
1. "ASP Calibration" for steering angle sensor offset correction.
2. "Longitudinal G-Sensor Calibration" for longitudinal sensor offset correction.
3. "Variant Coding".
| ▶ Repair open or short in ground circuit between battery and HECU harness connector and then go to "Verification of vehicle Repair" procedure. |
