Test A: Anti-Lock Brake System Module Does Not Respond To Scan Tool
- Turn ignition switch to LOCK position. Disconnect ABS control module harness connector C385. Disconnect Gray 4-pin in-line harness connector C555 from connector C556. Inspect connectors for damage, corrosion and proper seating. Repair as necessary. If connectors are okay, reconnect harness connectors C555 and C556. Measure resistance between ABS control module harness connector C385 terminal No. 23 (White wire) and DLC terminal No. 7 (White/Black wire). See Figure
and Fig 1
. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, go to step 3
.
- Repair circuit between ABS control module and DLC. See WIRING DIAGRAMS
. Repeat data link diagnostic test. See DATA LINK DIAGNOSTIC TEST
under SELF-DIAGNOSTIC SYSTEM.
- Inspect Gray, 40-pin in-line harness connector C70 for loose, damaged or corroded terminals. Repair as necessary. Reconnect all harness connectors and retest system. If symptom still exists, replace ABS control module and repeat data link diagnostic test. See DATA LINK DIAGNOSTIC TEST
under SELF-DIAGNOSTIC SYSTEM. If symptom does not exist, system is okay at this time. Fault may be intermittent. Clear DTCs and repeat self-test.
Courtesy of FORD MOTOR CO.