Contents Section: Body, Cab Control Systems All sections

Twice: Diagnosis Saab 9-5 I рестайлинг

Body, Cab Control Systems 11 illustrations ~499 words

Table Of Diagnostic Trouble Codes

TypeDTCFaulty function/componentDiagnostic procedure, see
B1130Rear Seat Heating Relay. Short to B+Seats B1130
B1130Rear Seat Heating Relay. Open Circuit / Short to GroundSeats B1130
B1210Seatbelt Warning Lamp. Short to B+Seat belt system B1210
B1210Seatbelt Warning Lamp. Open Circuit / Short to GroundSeat belt system B1210
B1510Power Ground. MissingB1510
B1515Signal Ground. MissingB1515
B1535Power Seats Relay. Short to B+Seats B1535
B1535Power Seat Relay. Open Circuit / Short to GroundSeats B1535
B1605Internal FaultB1605
B1780Immobilizer Data. Invalid DataTheft protection
B1785Siren. Open CircuitTheft protection
B1785Siren. Low BatteryTheft protection
B1790Glass Break Sensor, Front and/or Rear. Internal FaultTheft protection
B1795Tilt Sensor. No ResponseTheft protection
B1795Tilt Sensor. Internal FaultTheft protection
B1890Rear Glass Break Sensor No Connection/Internal FaultTheft protection
B2055TWICE Unit. Spare Part Programming Not Performed.DTC B2055: TWICE UNIT. SPARE PART PROGRAMMING NOT PERFORMED
B2385Transponder Key. MissingDoors and locks

DIAGNOSTIC TROUBLE CODE CHART

DTCDescription
DTC B1510Power Ground. Missing
DTC B1515Signal Ground. Missing
DTC B1605Internal Fault
DTC B2055TWICE Unit. Spare Part Programming Not Performed

DIAGNOSTIC TROUBLE CODES (DTC) LIST

Scheme 3

Scheme 3: Power Ground. Missing

Fault symptoms

Central locking does not work.

Malfunction

Malfunction or no function.

Malfunction or no function.

Diagnostic help

Perform spare parts programming using the diagnostic tool.

Scheme 4

Scheme 4: FAULT DIAGNOSIS, GENERAL

Fault Diagnosis Strategy For Electronic Systems

  1. The customer's description of the problem constitutes a basis for the fault diagnosis strategy. If necessary, the customer must demonstrate the trouble on the car to avoid misunderstandings.
  2. In certain cases, the function may be correct. 2.a. Good product knowledge is required to decide this. 2.b. If the function is correct, this must be explained to the customer.
  3. If the function is judged to be faulty, the car should be repaired. Saab's fault diagnosis strategy assumes that the technician is familiar with the customer's description of the problem. So note the customer's complaint and any other observations on the job sheet.
  4. The technician obtains a readout of the diagnostic trouble codes from all systems. A malfunction in one system can often be caused by a fault in another system.
  5. The car may contain diagnostic trouble codes which are secondary faults or which have been incorrectly generated. 5.a. Compare the customer's complaint with the symptom descriptions for the various diagnostic trouble codes. EPSI has a fast search path for this. 5.b. If the symptom description for a diagnostic trouble code matches the customer's complaint, this diagnostic trouble code is probably caused by the primary fault. Repair as per instructions.
  6. If there is no match with diagnostic trouble codes or symptoms, the technician must diagnose the fault himself. 6.a. In EPSI, search under fault diagnosis on the basis of symptoms in the system where the fault has occurred. 6.b. If the symptom description in the current system matches the complaint, the right fault diagnosis description has probably been found. Repair as per instructions.
  7. Certain fault symptoms can be remedied by reprogramming the control module. 7.a. Does the customer complaint stem from a known software problem in a programmable control module? 7.b. Reprogram the control module following the instructions in SPS.
  8. If there is no match with diagnostic trouble codes or symptoms, the technician must diagnose the fault himself. A final check must be carried out after the repair. Good technical product knowledge is required to solve this type of problem.
  9. The car is ready.

Table, Fault Symptoms

Fault symptomsDiagnostic procedure, see
No diagnostic communicationNo Diagnostic Communication
Central locking system failureDoors and locks CENTRAL LOCKING OF BOOT LID/TAILGATE NOT OPERATING
Central locking, tailgate/boot lid, failureDoors and locks CENTRAL LOCKING OF BOOT LID/TAILGATE NOT OPERATING
Electric heated rear seat not workingSeats REAR SEAT HEATING DOES NOT WORKING
Electric powered passenger seat not workingSeats ELECTRICALLY ADJUSTABLE PASSENGER SEAT NOT WORKING
Seat belt warning failureSeat belt system SEAT BELT WARNING DOES NOT WORKING

FAULT SYMPTOMS CHART

Scheme 5

Scheme 5: No Diagnostic Communication

No diagnostic function.

Diagnostic procedure

See BUS AND DIAGNOSTICS COMMUNICATION

Scheme 6

Scheme 6: Tech 2

SEE SERVICE MANUAL 1:4 TECH 2

Group: Test equipment

9000900 -M93900/9-39-59-3 (9440)
XXXXX

TECH 2 REFERENCE DATA

Scheme 7

Scheme 7: 86 11 170 Test Cable, 70-Pin

Trionic, DICE and TWICE

Group: Test equipment

9000900 -M93900/9-39-5
M93XXX

TEST CABLE, 70-PIN REFERENCE DATA

Scheme 8

Scheme 8: 86 11 345 Jumper Cable (x 2)

Group: Test equipment

9000900 -M93900/9-39-5
XXXX

JUMPER CABLE (X 2) REFERENCE DATA

Scheme 9

Scheme 9: 86 11 352 Measurement Cable, Male Pin (x 4)

Group: Test equipment

9000900-M93900/9-39-5
XXXX

MEASUREMENT CABLE, MALE PIN (X 4) REFERENCE DATA

Scheme 10

Scheme 10: 86 11 410 Measurement Cable, Female Pin (x 4)

Group: Test equipment

9000900 -M93900/9-39-5
XXXX

MEASUREMENT CABLE, FEMALE PIN (X 4) REFERENCE DATA

Scheme 11

Scheme 11: 86 11 857 Test Lamp, Red-Green

Voltage range 8-16V

Group: Test equipment

9000900 -M93900/9-39-59-3 (9440)
XXXXX

TEST LAMP, RED-GREEN REFERENCE DATA

Scheme 12

Scheme 12: Control Module
LocationUnder left-hand front seat, screwed on the floor
Number of pins70
Power supply +30Pin no.43
Power supply +15, logic/key positionPin no.16
Power supply +B, logic/key positionPin no.17
Power groundPin no.70
Signal groundPin no.37
Instrument bus, I-bus (+)Pin no.38
Instrument bus, I-bus (-)Pin no.15

CONTROL MODULE REFERENCE DATA

Scheme 13

Scheme 13: Test Readings, Control Module Connections