Jeep Liberty KJ. Manual

Jeep Liberty KJ. Manual - part 232

*BELT TENSION SENSOR VERIFICATION TEST

For a complete wiring diagram Refer to Section 8W.

Diagnostic Test

CHECK THE PASSENGER BELT TENSION SENSOR OUTPUT WITH NO LOAD APPLIED TO THE SENSOR

NOTE: Ensure that the battery is fully charged.
Remove any special tools or jumper wires and reconnect all previously disconnected components.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.
Verify that the passenger seat belt is unbuckled and that there is no load on the passenger seat belt and retractor
assembly.

With the scan tool in OCM, select Sensor Display and select Passenger Belt Tension Sensor Output.

Read the Passenger Belt Tension Sensor Output on the scan tool display.

Is the Passenger BTS Output between 39 and 69?

Yes

>> Go To 2

>> Replace the Front Passenger Seat Belt Retractor and Passenger Belt Tension Sensor Assembly in

accordance with the Service Information.

Perform BELT TENSION SENSOR VERIFICATION TEST.

CHECK THE PASSENGER BELT TENSION SENSOR OUTPUT WITH A LOAD APPLIED TO THE SENSOR

Apply 11 kg (24 lbs) to 12 kg (26 lbs) of pressure to the Passenger Belt Tension Sensor using the spring scale Miller
special tool 8828 as follows:

•

Connect the hook at the bottom of the spring scale through the Passenger Belt Tension Sensor webbing loop
so that the end of the hook faces the passenger seat.

•

Place the maximum reading indicator at the bottom of the spring scale.

•

Grab the horizontal bar at the top of the spring scale. Pull the spring scale straight upward keeping the hori-
zontal bar level with the door sill and the spring scale in-line with the Passenger Belt Tension Sensor.

•

Apply and hold 11 kg (24 lbs) to 12 kg (26 lbs) of pressure on the sensor while an assistant monitors the
Passenger Belt Tension Sensor Output on the scan tool display.

Is the Passenger BTS Output between 153 and 204 with 11 kg (24 lbs) to 12 kg (26 lbs) of pressure
applied to the sensor?

Yes

>> Maintain the 11 kg (24 lbs) to 12 kg (26 lbs) of pressure on the Passenger Belt Tension Sensor and Go

To 3

>> Replace the Front Passenger Seat Belt Retractor and Passenger Belt Tension Sensor Assembly in

accordance with the Service Information.

Perform BELT TENSION SENSOR VERIFICATION TEST.

CHECK THE PASSENGER BELT TENSION SENSOR OUTPUT WITH THE LOAD RELEASED

Release the pressure applied with the spring scale while monitoring the Passenger Belt Tension Sensor Output on
the scan tool display. Make sure that there is no load applied to the sensor. The output must return to between 39
and 69 within 20 seconds of releasing the load.

Does the Passenger BTS Output return to between 39 and 69 within 20 seconds of releasing the load?

Yes

>> Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1.

>> Replace the Front Passenger Seat Belt Retractor and Passenger Belt Tension Sensor Assembly in

accordance with the Service Information.

Perform BELT TENSION SENSOR VERIFICATION TEST.

8O - 234

RESTRAINTS - ELECTRICAL DIAGNOSTICS

8O - 235