Pinpoint Test I: Bolster Inflate Tests
- I1: BOLSTER INFLATE TEST 1 NOTE: The battery support unit must be connected during this test to ensure that the power supply is stable.NOTE:
- Circuit reference - VBATT -
- The bolster inflate circuit current specification is 1.05A ± 10%.
- Connect an inductive ammeter to the seat switchpack power circuit
- Set the ignition to on
- Operate the seat switchpack bolster inflate switch
Is the measured current less than specification?
Yes: GO to I2.
No: Check the lumbar/bolster pump hose and the bolster air cell hoses for blockages/leaks
- I2: BOLSTER INFLATE TEST 2 NOTE: Do not disconnect the electrical connector during this step; the seat switchpack is removed for access to the wiring harness only.
- Refer to the relevant article of the repair information and remove the seat switchpack
- Set a multimeter to measure voltage
- Using the multimeter, measure and record the battery voltage (reference voltage)NOTE: Circuit reference - BOLSTER INF/GND -
- Connect the multimeter across the seat switchpack bolster inflate terminal and the ground terminal
- Set the ignition to on
- Operate the seat switchpack bolster inflate switch
Is the measured voltage less than battery voltage?
Yes: GO to PINPOINT TEST A .
No: Refer to the electrical circuit diagrams and check the bolster inflate circuit for short circuit to ground, short circuit to power, open circuit, high resistance