Pinpoint Test J : The IPMA (Image Processing Module A) Does Not Respond To The Diagnostic Scan Tool
WARNING: This page is about a different car, the 2020 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to Module Communications Network
for schematic and connector information. Refer to Cruise Control
for schematic and connector information. Refer to Vehicle Emergency Messaging System
for schematic and connector information.
Normal Operation and Fault Conditions
The IPMA communicates on the HS-CAN2.
Possible Sources
- Fuse
- Wiring, terminals and connector
- IPMA
Visual Inspection and Pre-checks
- Verify BCM fuse 21 (5A) is OK.
- J1 CHECK THE IPMA (IMAGE PROCESSING MODULE A) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: IPMA C9449.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C9449-4 Ground
Is the voltage greater than 11 volts?
Yes GO to J2 No VERIFY BCM fuse 21 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Introduction to identify the possible causes of the circuit short. - J2 CHECK THE IPMA (IMAGE PROCESSING MODULE A) GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure:
Positive Lead Measurement / Action Negative Lead C9449-5 Ground
Is the resistance less than 3 ohms?
Yes GO to J3 No REPAIR the circuit. - J3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE IPMA (IMAGE PROCESSING MODULE A) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN
- Disconnect GWM C2431.
Are the resistances less than 3 ohms?
Yes GO to J4 No REPAIR the circuit in question. - J4 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
- Ignition OFF.
- Disconnect and inspect the IPMA connector.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the IPMA connector. Make sure it seats and latches correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, General Service Bulletin (GSB), SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPMA. REFER to: Image Processing Module A (IPMA) . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.