Pinpoint Test G: DTCs B10DA:86, P1602 and/or U0100:00
Anti-Theft
Pinpoint Tests
Pinpoint Test G: DTCs B10DA:86, P1602 and/or U0100:00
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. Diagrams By Number
Normal Operation
During each vehicle start sequence, when the key is turned to the START or ON position, the Passive Anti-Theft System (PATS) transceiver reads the PATS key identification code and sends the data to the Instrument Panel Cluster (IPC). If there is no communication on the High Speed Controller Area Network (HS-CAN) between the IPC and the PCM, DTCs B10DA:86 and/or U0100:00 can set in the IPC and DTC P1602 will set in the PCM and the vehicle can experience a PATS no-start.
- DTC B10DA:86 (PATS PCM Identifier: Signal Invalid) - a continuous DTC that sets only when the IPC does not receive the expected response from the PCM over the HS-CAN and the fault may not be present at the time of testing. The data sent by the PCM does not match the data expected by the IPC and this DTC is set. This DTC can be caused by the HS-CAN circuits between the IPC and the PCM or by either module. This DTC can also be set if the battery voltage is low.
- DTC P1602 (Immobilizer/ ECM Communication Error) - a continuous DTC that sets when there is a loss of communication on the HS-CAN circuitry between the PCM and the IPC.
- DTC U0100:00 (Lost Communication With ECM/PCM "A": No Sub Type Information) - a continuous DTC that sets only when the IPC loses communication with the PCM and the fault may not be present at the time of testing. This DTC can be caused by an HS-CAN circuit concern or the IPC or PCM.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Low battery state of charge
- IPC
- PCM
PINPOINT TEST G: DTCs B10DA:86, P1602 AND/OR U0100:00
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G1 CHECK FOR DTC B10DA:61
- Carry out the IPC self-test.
- Is DTC B10DA:61 present?
Yes
CARRY OUT a parameter reset. REFER to Passive Anti-Theft System (PATS) Parameter Reset Passive Anti-Theft System (PATS). CLEAR the DTCs. CYCLE the ignition 3-5 times, making an attempt to start the vehicle each key cycle. REPEAT the self-test.
No
GO to G2.
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G2 CHECK THE BATTERY STATE OF CHARGE
- Ignition OFF.
- Check the battery state of charge with the battery condition test. Refer to Battery, Mounting and Cables Testing and Inspection.
- Does the battery pass the battery condition test?
Yes
GO to G3.
No
INSTALL a new battery. REFER to Battery, Mounting and Cables Testing and Inspection. TEST the system for normal operation.
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G3 CHECK FOR MODULE COMMUNICATION ON THE HS-CAN
- Connect the scan tool.
- Ignition ON.
- Carry out the network test using the scan tool.
- Is the scan tool unable to communicate with any of the modules on the HS-CAN?
Yes
REFER to Module Communications Network Testing and Inspection to diagnose the module that is not communicating with the scan tool.
No
GO to G4.
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G4 INSPECT THE HS-CAN CIRCUITRY
- Ignition OFF.
- Inspect all of the HS-CAN circuitry, including the pin crimps, connector fit, corroded/bent/pushed-out/damaged pins and splice integrity in the splices and connections between the PCM and the IPC. Refer to the Wiring Diagrams. Diagrams By Number
- Does the HS-CAN circuitry pass the component inspection?
Yes
GO to G5.
No
REPAIR the HS-CAN circuitry as necessary. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
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G5 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new PCM. REFER to Electronic Engine Controls Service and Repair. RESET the parameters in both the IPC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset Passive Anti-Theft System (PATS). CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation. If the concern is still present, GO to G6.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
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G6 CHECK FOR CORRECT IPC OPERATION
- Disconnect the IPC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IPC 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 IPC. REFER to Instrumentation, Message Center, and Warning Chimes Instrument Panel Cluster (IPC). RESET the parameters in both the IPC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset Passive Anti-Theft System (PATS). PROGRAM the PATS keys into the new IPC. REFER to Key Programming Using Diagnostic Equipment Using Diagnostic Equipment. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
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