Fault code 0328: Diagnosis/troubleshooting

NOTE: The rear convenience system control module does not switch off the output. This is protected by fuse F31 (15A) in fuse carrier at right of dashboard.

WORK INSTRUCTION CHART

Work instruction			Display OK	If not OK
1	Check rear window actuating element	Pull off plug on rear window actuating element Measure resistance between rear window actuating element, pins 1 and 2	5 to 20 Ω Go to step 2	Replace rear window actuating element → End
2	Check line to rear window actuating element for short circuit to B+	Pull off plug A on rear convenience system control module Measure voltage between rear control module plug A, pin 20 and ground	< 0.3 V Go to step 3	Repair line → End
3	Check line to rear window actuating element for short circuit to ground	Measure resistance between rear control module plug A, pin 20 and ground	∞ Ω Go to step 4	Repair line → End
4	Check line for open circuit	Measure resistance between rear control module plug A, pin 20 and rear window actuating element plug, pin 2	< 5 Ω Go to step 5	Repair line → End
4	Check line for open circuit	Measure resistance between ground and rear window actuating element plug, pin 1	< 5 Ω Go to step 5	Repair line → End
5	Replace rear convenience system control module		→ End