Pinpoint Test A:: Testing

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.

A1 VERIFY THE CONNECTION BETWEEN THE SCAN TOOL AND THE DATA LINK CONNECTOR (DLC) CONNECTOR
- Key in OFF position.
- Disconnect the scan tool, if connected.
- Reconnect the scan tool to the DLC.
- Enter the following diagnostic mode on the scan tool: Retrieve and Document Continuous DTCs.
- Are any DTCs present?
Yes : REFER to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX .

No : Go to A2.
A2 CHECK THE VOLTAGE TO THE ABS MODULE
- Key in OFF position.
- Disconnect: ABS Module C135.
- Key in ON position.
- Measure the voltage between ABS module C135-2, circuit 534 (YE/LG), harness side and ground; between ABS module C135-32, circuit 533 (TN/RD), harness side and ground; and between ABS module C135-31, circuit 532 (OG/YE), harness side and ground.
  
  Fig 1: Checking Voltage To ABS Module
  Courtesy of FORD MOTOR CO.
- Are the voltages greater than 10 volts?
Yes : Go to A3.

No : VERIFY battery junction box (BJB) fuse 11 (10A), fuse 22 (60A) and fuse 23 (60A) are OK. If OK, REPAIR the circuit(s) in question. REPEAT the self-test.
A3 CHECK THE ABS MODULE GROUND CIRCUITS FOR AN OPEN
- Key in OFF position.
- Measure the resistance between ABS module D135-16, circuit 530 (LG/YE), harness side and ground; and between ABS module C135-45, circuit 530 (LG/YE), harness side and ground.
  
  Fig 2: Checking ABS Module Ground Circuits For Open
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
Yes : REFER to MODULE COMMUNICATIONS NETWORK to continue diagnosis of the communication network.

No : REPAIR the circuit(s) in question. REPEAT the self-test.