Pinpoint Test A : U3003:13, U3003:16, U300E:13
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
- A1 RECHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, clear the ABS module Diagnostic Trouble Codes (DTCs).
- Ignition OFF.
- Ignition ON.
- Using a diagnostic scan tool, carry out the ABS module self-test.
Is DTC U3003:13 or U3003:16 still present?
Yes GO to A2 No The system is operating correctly at this time. The DTC may have set due to a previous low battery voltage condition. If DTC U300E:13 is present, GO to A5
If other ABS module Diagnostic Trouble Codes (DTCs) are present, GO to DTC Chart: Anti-Lock Brake System (ABS) Module . - A2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) IN THE PCM (POWERTRAIN CONTROL MODULE)
- Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Is DTC B1317, B1318, B1676, U3003:16 or U3003:17 present in one or more modules AND are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM?
Yes DIAGNOSE the charging system. REFER to: Charging System - 2.5L Duratec (125kW/170PS) . No GO to A3 - A3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Carry out the Battery Condition Test diagnostic routine. REFER to: Battery .
Did the battery pass the condition test?
Yes GO to A4 No INSTALL a new battery. REFER to: Battery - 2.5L Duratec (125kW/170PS) . - A4 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE VOLTAGE (VPWR_ABS) PID (PARAMETER IDENTIFICATION)
- Ignition ON.
- Measure and record the voltage at the battery.
- Using a diagnostic scan tool, monitor the VPWR_ABS PID.
Is the PID display within 0.2 volt of battery voltage?
Yes GO to A8 No GO to A5 - A5 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE VOLTAGE SUPPLY
- Ignition OFF.
- Disconnect ABS module C135 .
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C135-1 Ground C135-30 Ground C135-35 Ground
Is each voltage within 0.2 volt of battery voltage?
Yes If DTC U3003:13 or U3003:16 is present, GO to A6If DTC U300E:13 is present, GO to A8 No VERIFY BJB fuses 7 (40A), 8 (30A) and 19 (5A) are OK. If OK, REPAIR the affected circuit for high resistance or an open. If not OK, REFER to OEM Electrical Wiring Diagram Introduction to identify the cause of the circuit short. - A6 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect the battery negative cable. REFER to: Battery Disconnect and Connect .
- Measure:
Positive Lead Measurement / Action Negative Lead C135-14 Ground
Is the resistance less than 3 ohms?
Yes GO to A8 No REPAIR the circuit. - A7 VERIFY ALL WIRING CONNECTIONS
- Ignition OFF.
- Disconnect ABS module C135 .
- Using a good light source, inspect all disconnected electrical connectors for the following:
- corrosion - install new connector or terminal and clean the module pins
- damaged or bent pins - install new terminals or pins
- pushed-out pins - install new pins as necessary
- spread terminals - install new terminals as necessary
Are the connectors free of corrosion, damaged pins, bent pins, pushed-out pins and spread terminals?
Yes GO to A8 No REPAIR the connector or terminals. REFER to Connector Repair Procedures for schematic and connector information. - A8 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION
- Connect ABS module C135 . Make sure the connector seats and latches correctly.
- Connect the battery negative cable. REFER to: Battery Disconnect and Connect .
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ABS module and HCU. REFER to: Hydraulic Control Unit (HCU) . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.