PINPOINT TEST H : The IPC Does Not Respond To The Scan Tool
NOTE:
Failure to disconnect the battery when instructed will result in false resistance readings. REFER to Battery, Mounting and Cables
- H1 CHECK THE IPC VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Disconnect: IPC.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C220-21 Ground
Is the voltage greater than 11 volts?
Yes GO to H2. No VERIFY the BCM fuse 11 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short. - H2 CHECK THE IPC GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure:
Positive Lead Measurement / Action Negative Lead C220-5 Ground
Are the resistances less than 3 ohms?
Yes GO to H3. No REPAIR the circuit. - H3 CHECK THE HS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN
Are the resistances less than 3 ohms?
Yes CONNECT the negative battery cable. GO to H4. No REPAIR the circuit in question. - H4 CHECK FOR CORRECT IPC OPERATION
- Ignition OFF.
- Disconnect and inspect the IPC connector and related in-line connectors.
- Repair:
- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary
- Reconnect the IPC connector and related in-line connectors. Make sure they seat and latch correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, refer to IPC HARDWARE TESTING . No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
