Diagnostic Manual, Body and Accessories,
Volume 4.1
Diagnosis - Complaint Related Diagnostic Chart
Preparation for Test:
1. Review  11, 20, 22
Electrical wiring diagrams:
Electrical Troubleshooting Manual, Model 163,
(available in Work Shop Information System [WIS] only)
|
Test Functions
| Complaint/Problem |
Possible cause |
Test step/Remedy 1) |
| Entire front seat (left and right) heater system does not function. |
Convenience relay (F1k14) |
|
Left front seat
Heating stage I does not function.
|
Seat heater relay (stage 1) (K59)
Left front seat heater switch (S51/1)
LF seat cushion heater element (R13/1)
LF backrest heater element (R13/2)
|
23  1.0,
23 3.0,
23 5.0 |
Left front seat
Heating stage II does not function. |
Seat heater relay (stage 2) (K59/1)
Left front seat heater switch (S51/1)
|
23 2.0,
23 3.0 |
Left front seat, heating stage II ,
LF seat cushion heater element (R13/1) does not function
|
LF seat cushion heater element (R13/1) |
23 5.0 |
Left front seat, heating stage II ,
LF backrest heater element (R13/2) does not function
|
LF backrest heater element (R13/2) |
23 5.1 |
Right front seat
Heating stage I does not function.
|
Seat heater relay (stage 1) (K59)
Right front seat heater switch (S51/2)
RF seat cushion heater element (R13/3)
RF backrest heater element (R13/4)
|
23 7.0,
23 9.0,
23 11.0 |
Right front seat
Heating stage II does not function. |
Seat heater relay (stage 2) (K59/1)
Right front seat heater switch (S52/1)
|
23 8.0,
23 9.0 |
Right front seat, heating stage II ,
RF seat cushion heater element (R13/3) does not function
|
RF seat cushion heater element (R13/3) |
23 12.0, 13.0 |
Left front seat, heating stage II ,
RF backrest heater element (R13/4) does not function
|
RF backrest heater element (R13/4) |
23 12.0, 13.0 |
| 1) Observe Preparation for Test, see 22. |
|
Printable version
