Testing and Inspection of Flex FWD V6-35L Powertrain Management System
-
Ignition ON.
-
Disconnect: IC C220.
-
Measure the voltage between the IC C220-21, circuit SBP26 (YE/RD), harness side and ground; and between the IC C220-20, circuit CBP29
(WH/VT), harness side and ground.
-
Are the voltages greater than 10 volts?
Yes
GO to C7.
No
VERIFY Smart Junction Box (SJB) fuse 26 (10A) or fuse 29 (5A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring
Diagrams to IDENTIFY the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool. See:
Diagrams/Electrical Diagrams/Diagrams By Number
-------------------------------------------------
C7 CHECK FOR CORRECT IC OPERATION
-
Disconnect the IC connector.
-
Check for:
-
corrosion
-
damaged pins
-
pushed-out pins
-
Connect the IC connector and make sure it seats correctly.
-
Operate the system and verify the concern is still present.
-
Is the concern still present?
Yes
INSTALL a new IC. REFER to Instrument Panel, Gauges and Warning Indicators. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
-------------------------------------------------
Pinpoint Test D: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test D: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 46, Supplemental Restraint System for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams