Test 4

Disconnect left rear window switch connector. With ignition switch in RUN position, connect a test light between left rear window switch Dark Green wire connector terminal and Purple wire connector terminal. Press left rear window switch (on master switch) up then down.
If light comes on in both directions, go to step 3). If light does not come on in both directions, check for open in Dark Green and Purple wires between master switch and left rear window switch. If wires are okay, replace master switch.
Connect a jumper wire between left rear window switch connector Dark Green wire and Dark Blue wire (going to left rear window motor). Connect a jumper wire between left rear window switch connector Purple wire and Brown wire.
Press left rear window switch (on master switch) up and down. If window motor operates, replace left rear window switch. If window motor does not operate, check for open in Dark Blue and Brown wires between left rear window switch and left rear window motor. If wires are okay, replace motor.