4.
Has a problem been found?
 | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Next" procedure. |
Many malfunctions in electrical systems 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 connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,or damage.
Monitoring a DVOM on min/max or the VMI while wiggling connectors may help find the problem.
Has a problem been found?
| ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Next" procedure. |
Ignition "OFF".
Disconnect Clutch Sensor harness connector.
Ignition "ON".
Measure Voltage between Power terminal of Clutch Sensor harness connector and chassis ground .(M1)
Measure Voltage between Clutch1,2 Power terminal of Clutch Sensor harness connector and chassis ground .(M2)
Specification : (M1) : B +, (M2) : approx. 5V.
Is the measured Voltage within specifications?
| ▶ Go to Next procedure. |
| ▶ Check for open and short to ground in harness. ▶ Check for EPB ECU. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
Ignition "OFF".
Disconnect Clutch Sensor and EPB ECU main harness connector.
Measure resistance between Ground terminal of Clutch Sensor harness connector and chassis ground .(M1)
Measure resistance between Clutch1,2 GND terminal of Clutch Sensor harness connector and chassis ground .(M2)
Specification : Approx. 1.0 Ω
Is the measured Voltage within specifications?
| ▶ Go to Next procedure. |
| ▶ Check for open in harness. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
Ignition "OFF".
Disconnect Clutch Sensor and EPB ECU main harness connector.
Measure resistance between Clutch1,2 Signal terminal of Clutch Sensor harness connector and chassis ground.
Specification : Infinity.
Is the measured resistance within specifications?
| ▶ Go to Next procedure. |
| ▶ Check for short to ground in harness. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
Ignition "OFF"
Disconnect Clutch Sensor and EPB ECU main harness connector.
Measure voltage between Clutch1,2 Signal terminal of Clutch Sensor harness connector and chassis ground.
Specification : Approx. 0V.
Is the measured voltage within specifications?
| ▶ Go to Next procedure. |
| ▶ Check for short to battery in harness. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
Ignition "OFF"
Disconnect Clutch Sensor and EPB ECU main harness connector.
Measure resistance between PWM Signal of Clutch Sensor harness connector and PWM Signal of EPB ECU harness connector.
Specification : below 1Ω
Is the measured resistance within specifications?
| ▶ Check for poor connection between Clutch Sensor and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known-good Clutch Sensor and check for proper operation. If the problem is corrected, replace Clutch Sensor and then go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known-good EPB ECU and check for proper operation. If the problem is corrected, replace EPB ECU and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Check for open in harness. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
