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Diagnostic Manual, Body and Accessories,
Volume 4.1

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LOCATION:    13.1 Anti-Theft Alarm (ATA)   >   14 Diagnosis - Complaint Related Diagnostic Chart


Diagnosis - Complaint Related Diagnostic Chart

Preparation for Test:
1. Review 10, 21, 22, 31,
2. Fuses OK,
3. Battery voltage 11 - 14 V
4. IRCL system functional, if not see Test Section 4.10 in DM,
B&A, Vol. 2.

5. CL system functional, if not see Test Section 3.5 in DM,
B&A, Vol. 1.1.

6. Ignition: ON

Electrical wiring diagrams:
Electrical Troubleshooting Manual, Model 129

Complaint/Problem Possible cause Test step/Remedy 1)
Entire ATA system does not function. ATA control module (N26) 23 1.0
ATA system does not function when using IRCL.
Connection IRCL - ATA disturbed:
With IRCL up to 05/97
as of 06/97

23 2.0
23 3.0
ATA system does not function when using mechanical key.
Mechanical lock switch:
Up to 05/97
With IRCL up to 12/93
23 4.0
No confirmation signal when arming the ATA system. Doors have not been completely closed,
ATA status indicator (E33) (w/o anti-tow sensor) or
ATA status/towing protection switch (S85/3)
(with anti-tow sensor)

23 19.0

23 20.0
ATA status indicator does not function. ATA status indicator (E33) (w/o anti-tow sensor) or
ATA status/towing protection switch (S85/3)
(with anti-tow sensor)
23 19.0

23 20.0
ATA does not sound alarm when opening a front door. Left front door switch (S17/3)
Right front door switch (S17/4)
23 6.0
ATA does not sound alarm when opening the trunk lid. Rotary tumbler/trunk lid microswitch (S88/1)
23 7.0
ATA does not sound alarm when opening engine hood. Engine hood switch (ATA) (S62)
23 8.0
ATA does not sound alarm when removing the radio. ATA contact connector (radio) (1-pole)
(applies to older radio generation up to 05/97)
23 10.0
ATA "acoustical" alarm does not sound. Alarm horn (H3) or Up to 05/98
Alarm siren with auxiliary battery (H3/1). As to 06/98
23 12.0
23 13.0
ATA "optical" alarm does not function. Front headlamps (only )
Taillamps (only )
23 16.0
23 17.0
ATA will not cancel via remote control. IRCL or RCL (as of 06/97) Check system, see DM, B&A, Vol. 2, Test Section 4.10
ATA does not sound alarm via anti-tow function. Anti-tow control module (N26)
ATA tow sensor (B33)
23 22.0
23 23.0
1) Observe Preparation for Test, see 22.