B1E49

B1E49 - 3rd Row Seat Right Backrest Position Sensor Circuit Low






For a complete wiring diagram, refer to.

• When Monitored: Whenever the seat motor is activated.

• Set Condition: If sensor voltage is below a specified range this DTC will set.






Test Step 1 - Test For Intermittent Condition

• Turn the ignition ON.

• With the scan tool, erase all DTCs.

• Move the seat recliner switch in both positions three times.

• With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

• Go to Test Step 2 => [ Test Step 2 - Check the Right Seat Back Position Sensor Supply Circuit
Voltage ]

No

• The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.

• Perform Power Folding Seat System Verification Test. Refer to => Non - DTC Based Diagnostics. Power Folding Seat System Verification Test

Test Step 2 - Check the Right Seat Back Position Sensor Supply Circuit Voltage






• Turn the ignition OFF.

• Disconnect the C391 power folding Rear seat 16 way in - line harness connector.

• Check connectors - Clean and repair as necessary.

• Connect a voltmeter between the right seat back position sensor supply circuit and the right seat back position sensor return circuit at the 16 way in - line harness connector.

• With the folding seat switch select the right seat.

• Depress the stow position switch.

Is the voltage 10.0 volts?

Yes

• Go to Test Step 3 => [ Test Step 3 - Check the Right Seat Back Position Sensor Supply Circuit
for a Short to Ground At Motor ]

No

• Go to Test Step 4 => [ Test Step 4 - Check the Right Seat Back Position Sensor Supply Circuit
for a Short to Ground At Module ]

Test Step 3 - Check the Right Seat Back Position Sensor Supply Circuit for a Short to Ground At Motor






• Turn the ignition OFF.

• Disconnect the right power rear folding seat back motor harness connector.

• Measure the resistance of the right seat back position sensor supply circuit to ground and to other circuits at the right power rear folding seat back motor harness connector.

Is there any continuity present?

Yes

• Repair the right seat back position sensor supply circuit for a short to ground or to another circuit.

• Perform Power Folding Seat System Verification Test. Refer to => Non - DTC Based Diagnostics. Power Folding Seat System Verification Test

No

• Replace the right power rear folding seat back motor assembly.

• Perform Power Folding Seat System Verification Test. Refer to => Non - DTC Based Diagnostics. Power Folding Seat System Verification Test

Test Step 4 - Check the Right Seat Back Position Sensor Supply Circuit for a Short to Ground At Module






• Disconnect the folding seat module C3 harness connector.

• Measure the resistance of the right seat back position sensor supply circuit to ground and to other circuits in the folding seat module C3 harness connector.

Is there any continuity present?

Yes

• Repair the right seat back position sensor supply circuit for a short to ground or to another circuit.

• Perform Power Folding Seat System Verification Test. Refer to => Non - DTC Based Diagnostics. Power Folding Seat System Verification Test

No

• Replace the folding seat module.

• Perform Power Folding Seat System Verification Test. Refer to => Non - DTC Based Diagnostics. Power Folding Seat System Verification Test