:  Dec 17, 2007



Overview

The glass, frames and mechanisms are of fairly straightforward design requiring no specialized techniques for diagnosis.

Some of the components from the description and operation section, such as the rain sensor and antennae are covered in other sections of the manual, so this section will provide basic diagnosis for the window and heated screen functions.

For information on the description and operation of the systems covered, refer to the relevant description and operations section of the workshop manual.

Inspection and Verification

. Verify the customer concern.

. Visually inspect for obvious mechanical or electrical faults.

Mechanical Electrical
  • Window control switches condition and installation
  • Window motors/regulators
  • Window channels/runners
  • Window cables
  • Fuses Central junction box (CJB) - fuse 7 Central junction box (CJB) - fuse 13 Central junction box (CJB) - fuse 17 Central junction box (CJB) - fuse 30 Central junction box (CJB) - fuse 31
  • Harnesses and connectors
  • Window lift relay
  • Window control switches
  • Window motors

. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

. Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart or DTC index.
  Make sure that all DTCs are cleared following rectification.
Make sure that all DTCs are cleared following rectification.

Symptom chart

Symptom Possible causes Action
Window(s) inoperative
  • Fuse(s)
  • Switch fault Front switch isolator fault
  • Motor/Regulator fault
  • Channel/Runner fault
  • Cable fault
  • Harness fault
Check the fuses (see visual inspection). Check the suspect window operation from the individual door switch and from the driver door master switch (it is unlikely that both switches would fail at the same time, so if the window is inoperative from either switch, suspect a fault other than a switch). If the inoperative window is a rear unit, check the function of the isolator at the master switch.
Window(s) 'one-shot' function inoperative
  • Window motor initialization required
  • Switch fault
If the battery has been disconnected, carry out the initialization procedure. Refer to the relevant section of the workshop manual. Check the switch function after initialization.
Window(s) noisy
  • Channel/Runner fault
  • Cable fault
  • Motor/Regulator fault
Check the channels and runners for foreign objects, etc. Check the cable condition and routing. Check the motor and regulator condition.
Rear window does not defrost
  • Fuse
  • Switch fault
  • Relay fault
  • Element fault
  • Circuit fault
Check fuse 13P of the CJB. Check the operation of the heated rear window switch and relay. Check the element for continuity. Check the heated rear window circuit. Refer to the electrical guides.

DTC index

:
  Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

:
  For a full list of seat heating function DTCs, refer to section 412-02 - Control Components in the workshop manual.

DTC Description Possible causes Action
B1C5812 Power Windows Relay Coil Circuit
  • Power windows relay coil circuit short to power
Refer to the electrical guides and check the power windows relay circuit, repair/renew as necessary.
B1C5814 Power Windows Relay Coil Circuit
  • Power windows relay coil circuit short to ground or open circuit
Refer to the electrical guides and check the power windows relay circuit, repair as necessary.
B1C5912 Power Windows Relay Output Circuit
  • Power windows relay output circuit short to power
Refer to the electrical guides and check the power windows relay output circuit, repair/renew as necessary.
B1C5914 Power Windows Relay Output Circuit
  • Power windows relay output circuit short to ground or open circuit
Refer to the electrical guides and check the power windows relay supply fuse, output circuit fuse and relay output circuit, repair as necessary.
B1C8312 Heated Rear Window Relay Coil Circuit
  • Heated rear window relay coil circuit short to power
Refer to the electrical guides and check the heated rear window relay circuit, repair as necessary.
B1C8314 Heated Rear Window Relay Coil Circuit
  • Heated rear window relay coil circuit short to ground or open circuit
Refer to the electrical guides and check the heated rear window relay circuit, repair as necessary.
B1C8412 Heated Rear Window Relay Output Circuit
  • Heated rear window relay output circuit short to power
Refer to the electrical guides and check the heated rear window relay circuit, repair/renew as necessary.
B1C8414 Heated Rear Window Relay Output Circuit
  • Heated rear window relay output circuit short to ground or open circuit
Refer to the electrical guides and check the heated rear window relay supply fuse and the relay output circuit, repair as necessary.