Section 167 (Anti-Theft Systems): Testing: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1993 Mercury Cougar, 1993 Lincoln Town Car, 1993 Lincoln Mark VIII, 1993 Lincoln Continental, and 1993 Ford Thunderbird. However, it is still accessible from the selected car via links, so may be relevant.
Use the following diagnosis chart to determine individual pinpoint tests for anti- theft system.
ANTI-THEFT MODULE CONNECTOR CIRCUITS
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| 1 | 23 (T/LG) | Battery Power |
| 2 | 13 (R/BK) | Low Beam Headlights |
| 3 | 701 (LB/BK) | Door Ajar Input |
| 4 | 296 (W/P) | Hot In ACC/RUN |
| 5 | 26 (W/P) | Deck Lid Input |
| 6 | 25 (DG/P) | Disarm Switch Input |
| 7 | 118 (PK/O) | Unlock Passenger Door |
| 8 | 163 (R/O) | Unlock Driver Door |
| 9 | 117 (PK/BK) | Lock All Doors |
| 10 | ***** | Not Used |
| 11 | ***** | Not Used |
| 12 | 32 (R/LB) | Starter Interrupt Input |
| 13 | 33 (W/PK) | Starter Interrupt Output |
| 14 | ***** | Not Used |
| 15 | 343 (DB/LG) | Alarm Indicator Light |
| 16 | 23 (T/LG) | Battery Power |
| 17 | 13 (R/BK) | Low Beam Headlights |
| 18 | 6 (Y/LG) | Horn Enable Output |
| 19 | ***** | Not Used |
| 20 | ***** | Not Used |
| 21 | 14 (BR) | Parking Lights |
| 22 | ***** | Not Used |
| 23 | ***** | Not Used |
| 24 | 33 (W/PK) | Starter Interrupt Output |
| 25 | 627 (BK/O) | Door Ajar Output |
| 26 | 57 (BK) | Ground |
ANTI-THEFT MODULE CONNECTOR CIRCUITS
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| 1 | 195 (T/W) | Battery Power |
| 2 | ***** | Not Used |
| 3 | 627 (BK/O) | Door Ajar Input |
| 4 | 640 (R/Y) | Hot In ACC/RUN |
| 5 | 23 (T/LG) | Trunk/Hood Tamper Switch |
| 6 | 25 (T/LG) | Door Disarm Switches |
| 7 | 118 (PK/O) | Unlock Passenger Door |
| 8 | 163 (R/O) | Unlock Driver Door |
| 9 | 117 (PK/BK) | Lock All Doors |
| 10 | 936 (DG/W) | Ignition Tamper Input |
| 11 | 342 (LG/P) | Starter Interrupt Output |
| 12 | ***** | Not Used |
| 13 | ***** | Not Used |
| 14 | ***** | Not Used |
| 15 | 343 (DB/LG) | Alarm Indicator Light |
| 16 | 195 (T/W) | Battery Power |
| 17 | ***** | Not Used |
| 18 | 1 (DB) | Horn Relay |
| 19 | ***** | Not Used |
| 20 | ***** | Not Used |
| 21 | 218 (W/P) | Flash Lights Output |
| 22 | ***** | Not Used |
| 23 | 57 (BK) | Ground |
| 24 | ***** | Not Used |
| 25 | 267 (BK/O) | Door Ajar Output |
| 26 | 57 (BK) | Module Ground |
ANTI-THEFT MODULE CONNECTOR CIRCUITS
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| 1 | 23 (T/LG) | Battery Power |
| 2 | 13 (R/BK) | Low Beam Headlight Output |
| 3 | 341 (O/W) | Door Ajar Input |
| 4 | 296 (W/P) | Hot In ACC/RUN |
| 5 | 486 (BR/W) | Trunk Tamper Switch |
| 6 | 25 (DG/P) | Door Disarm Switches |
| 7 | 118 (PK/O) | Unlock All Doors |
| 8 | 163 (R/O) | Unlock Driver Door |
| 9 | 117 (PK/BK) | Lock All Doors |
| 10 | ***** | Not Used |
| 11 | ***** | Not Used |
| 12 | 33 (W/PK) | Starter Interrupt Input |
| 13 | 32 (R/LB) | Starter Interrupt Output |
| 14 | ***** | Not Used |
| 15 | 343 (DB/LG) | Alarm Indicator Light |
| 16 | 23 (T/LG) | Battery Power |
| 17 | 13 (R/BK) | Low Beam Headlight Output |
| 18 | 6 (Y/LG) | Horn Relay Output |
| 19 | ***** | Not Used |
| 20 | ***** | Not Used |
| 21 | 14 (BR) | Parking Lights |
| 22 | 14 (BR) | Parking Lights |
| 23 | ***** | Not Used |
| 24 | 32 (R/LB) | Starter Interrupt Output |
| 25 | 267 (BK/O) | Door Ajar Output |
| 26 | 57 (BK) | Ground |
ANTI-THEFT MODULE CONNECTOR CIRCUITS (MARK VIII)
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| 1 | 931 (T/LG) | Battery Power |
| 2 | ***** | Not Used |
| 3 | 627 (BK/O) | Door Ajar Switches |
| 4 | 294 (W/LB) | Ignition Switch Input |
| 5 | 26 (W/P) | Trunk/Hood Tamper Switches |
| 6 | 25 (DG/P) | Door Disarm Switches |
| 7 | 118 (PK/O) | Unlock All Doors |
| 8 | 163 (R/O) | Unlock Driver Door |
| 9 | 117 (PK/BK) | Lock All Doors |
| 10 | 936 (DG/W) | Ignition Key Sensor |
| 11 | 342 (LG/P) | Starter Interrupt |
| 12 | ***** | Not Used |
| 13 | ***** | Not Used |
| 14 | ***** | Not Used |
| 15 | 343 (DB/LG) | Alarm Indicator Light |
| 16 | ***** | Not Used |
| 17 | ***** | Not Used |
| 18 | 1 (DB) | Horn Relay Output |
| 19 | ***** | Not Used |
| 20 | ***** | Not Used |
| 21 | 218 (W/P) | Exterior Lights Output |
| 22 | ***** | Not Used |
| 23 | 57 (BK) | Ground |
| 24 | ***** | Not Used |
| 25 | ***** | Not Used |
| 26 | 57 (BK) | Ground |
ANTI-THEFT/CPU MODULE CONNECTOR CIRCUITS
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| A | 323 (GN/O) | Horn Relay |
| B | 262A (W/R) | Headlight Relay |
| C | 909 (LG/Y) | Starter Interrupt Relay |
| D | 901 (LG) | Instrument Cluster |
| E | ***** | Not Used |
| F | 904 (Y/R) | Power Door Lock Switches |
| G | ***** | Not Used |
| H | 906 (LG/R) | Liftgate Switch |
| I | ***** | Not Used |
| J | 301A (R) | Liftgate Lamp Switch |
| K | 905 (BR/Y) | LH Pwr. Door Motor Switch |
| L | 910 (Y) | RH Pwr. Door Motor Switch |
| M | 115 (GN/R) | Flasher Module |
| N | 908 (BR/W) | Hood Switch |
| O-T | ***** | Not Used |
INSTRUMENT CLUSTER MODULE CONNECTOR CIRCUITS
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| 2A | 52F (BK) | Ground |
| 2B | 305C (GN/Y) | Inst. Panel Dimmer Switch |
| 2C | 80H (O) | Parking Light Relay |
| 2D | 301B (R) | Trunk Compart. Light Sw. |
| 2E | 731 (GN) | Tach Signal From Ignition |
| 2F | 110 (P/Y) | Oil Pressure Sender |
| 2G | 746 (BL) | Malfunction Light Signal |
| 2H | 307 (BR/BK) | Seat Belt Light Signal From CPU |
| 2I | 824 (BR/Y) | O/D Off Light Signal |
| 2J | 901A (LG) | Theft Warning Light Signal |
| 2K | 84R (BL/R) | Power |
| 2L | 952A (R/GN) | Air Bag Diag. Module |
| 2M | 244 (W/R) | Inertia Fuel Cutoff Switch |
| 2N | 117C (GN/W) | RH Signal From Flasher |
| 2O | 300A (R/W) | Door Switches & CPU |
| 2P | 20 (W/BK) | Generator/Voltage Regulator Signal |
WARNING CHIME/CPU MODULE CONNECTOR CIRCUITS
| Pin No. | Circuit (Color) | Function |
|---|---|---|
| A | **** | Power |
| B | 300 (R/W) | Seat Belt Indicator |
| C | 84G (BL/R) | Power & Key |
| " | ******* | Reminder Switch |
| D | 53F (BK) | Ground |
| E | 300 (R/W) | Door Jamb Switches |
| " | ******* | & Ajar Light |
| F | 333D (GN) | Dome, Map & Foot Lights |
| G | 304 (PK) | Illuminated Entry Lights |
| H | ****** | Not Used |
| I | 303 (BL/Y) | Key Reminder Switch |
| J | 302 (R/Y) | Door Handle Switches |
| K | 308 (BR/W) | Seat Belt Buckle Switch |
| L | ***** | Not Used |
| M | ***** | Not Used |
| N | ***** | Not Used |
| O | 108 (R/Y) | Backup Lights & Switch |
| P | 80 (O) | Rear & Dimmer Lights |
| " | ***** | & Parking Light Relay |
ANTI-THEFT DIAGNOSIS CHART (CONTINENTAL, COUGAR & THUNDERBIRD)
| Symptom | Pinpoint Test |
|---|---|
| Verify Alarm Arming | Test A |
| Verify Untriggered Alarm Disarming | Test B |
| Verify Alarm Activation | Test C |
| Verify Triggered Alarm Disarming | Test D |
| Vehicle Will Not Crank | Test E |
| Alarm Light Is Always On | Test F |
| Alarm Light Does Not Work | Test G |
| Horn, Headlights & Parking Lights Always On | Test H |
| System Activates Falsely | Test I |
| Door & Trunk Switch Diagnostics | Test J |
ANTI-THEFT DIAGNOSIS CHART (MARK VII & TOWN CAR)
| Symptom | Pinpoint Test |
|---|---|
| Verify Alarm Arming | Test A |
| Verify Untriggered Alarm Disarming | Test B |
| Verify Alarm Activation | Test C |
| Verify Triggered Alarm Disarming | Test D |
| Vehicle Will Not Crank | Test E |
| Alarm Light Is Always On | Test F |
| Alarm Light Does Not Work | Test G |
| Horn, Headlights & Parking Lights Always On | Test H |
| System Activates Falsely | Test I |
| Verify Ignition Lock Cylinder Sensor | Test J |
| Door/Trunk/Hood Switch & Ignition Sensor Diagnostics | Test K |
ANTI-THEFT DIAGNOSIS CHART (PROBE)
| Symptom | See Pinpoint Test K, Step |
|---|---|
| System Does Not Operate | Step 1 |
| Alarm Light Does Not Light | Step 6 |
| Alarm Light Is Always On | Step 9 |
| System Disarms But Vehicle Will Not Start | Step 11 |
| Vehicle Starts With System Armed | Step 11 |
| Hazard Lights Do Not Flash | Step 12 |
| Horn Does Not Sound Alarm | Step 13 |
| Headlights Do Not Light | Step 14 |
| Alarm Does Not Work When Manual Or Power Door Locks Are Used | Step 15 |
| Alarm Does Not Arm With Power Door Locks | Step 15 |
| Alarm Goes Off When Alarm Is Armed | Step 15 |
| Alarm Does Not Work When Interior Liftgate Switch Is Operated | Step 18 |
| Alarm Does Not Work When Hood Is Opened | Step 19 |
| Alarm Does Not Deactivate When Door Key Is Used | Step 22 |
| Alarm Does Not Deactivate When Liftgate Key Is Used | Step 25 |