Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 27 (ANTI-LOCK BRAKE SYSTEM)SELF-DIAGNOSTIC TESTSTEST 1A: CHECKING SYSTEM FOR FAULTS
1984 Plymouth Horizon Base, 1.6 A
Test 1A: Checking System For Faults
1984 Plymouth Horizon Base, 1.6 ASECTION Test 1A: Checking System For Faults
WARNING: This page is about a different car, the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Dodge Spirit, 1994 Dodge Shadow, and 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
- Using DRB, read fault messages. If DRB is showing a blank message screen, go to TEST 18A. If DRB is displaying NO RESPONSE message, go to TEST 17A. If no fault messages are present, turn ignition off and on. Using DRB, read fault messages. Monitor display for 4 minutes. If no fault messages are present, perform TEST VER-1A. If fault messages are present, go to next step.
- In some cases, cause of one fault message may set additional fault messages. If multiple fault messages appear on DRB, fault repairs must be performed in order they appear in FAULT MESSAGES table. If only one fault is set, perform indicated test for that fault message.
FAULT MESSAGES
| DRB Message | Test No. | ||
|---|---|---|---|
| CAB | (1) | ||
| MODULATOR | TEST 9A | ||
| SYSTEM RELAY | TEST 16A | ||
| PUMP/MOTOR | TEST 10A | ||
| SOLENOID UNDERVOLTAGE | TEST 15A | ||
| ANTILOCK LAMP DIODE CIRCUIT | TEST 2A | ||
| ANTILOCK LAMP CIRCUIT | TEST 3A | ||
| EXCESS DECAY | TEST 4A | ||
| LF WHEEL SPEED SENSOR | TEST 5A | ||
| LR WHEEL SPEED SENSOR | TEST 6A | ||
| LF WSS CONTINUITY | TEST 7A | ||
| LR WSS CONTINUITY | TEST 8A | ||
| RF WSS CONTINUITY | TEST 11A | ||
| RF WHEEL SPEED SENSOR | TEST 12A | ||
| RR WHEEL SPEED SENSOR | TEST 13A | ||
| RR WSS CONTINUITY | TEST 14A | ||
| NO RESPONSE | TEST 17A | ||
|
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RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.