Communication - Non-Dtc Based Diagnostics: Diagnosis Jeep Compass I рестайлинг 2

DIAGNOSTIC CAN C (+) AND/OR DIAGNOSTIC CAN C (-) CIRCUITS HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

DIAGNOSTIC CAN C (+) SHORTED TO DIAGNOSTIC CAN C (-)

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

DIAGNOSTIC CAN C (+) CIRCUIT LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

DIAGNOSTIC CAN C (-) CIRCUIT LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

DIAGNOSTIC CAN C (+) CIRCUIT OPEN

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

DIAGNOSTIC TEST

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Ensure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Ensure the scan tool is updated to the latest software. NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off 3 times. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 No The conditions that caused this error message to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2. (D72) DIAGNOSTIC CAN C (+) CIRCUIT OPEN Turn the ignition off. Disconnect the Totally Integrated Power Module (TIPM) C3 harness connector. Disconnect the scan tool from the DLC. Measure the resistance of the (D72) Diagnostic CAN C (+) circuit between the TIPM C3 harness connector and the DLC. Is the resistance below 5.0 ohms? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the Totally Integrated Power Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612758-S33453045902014043000000) . No Repair the (D72) Diagnostic CAN C (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612758-S33453045902014043000000) .

DIAGNOSTIC CAN C (-) CIRCUIT OPEN

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Ensure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Ensure the scan tool is updated to the latest software. NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off 3 times. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 No The conditions that caused this error message to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2. (D71) DIAGNOSTIC CAN C (-) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C3 harness connector. Disconnect the scan tool from the DLC. Measure the resistance of the (D71) Diagnostic CAN C (-) circuit between the TIPM C3 harness connector and the DLC. Is the resistance below 5.0 ohms? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the Totally Integrated Power Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612758-S33453045902014043000000) . No Repair the (D71) Diagnostic CAN C (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612758-S33453045902014043000000) .

Scheme 224

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, select ECU View. NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network. NOTE: Check the TIPM for any active CAN C hardware and any ignition related DTCs, perform DTCs before proceeding. Does the scan tool display a red "X" next to the module? Yes Go To 2 No The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
2. CHECK PCM POWER AND GROUND Check the PCM power and ground circuits. Refer to «DIAGNOSIS AND TESTING»(ref-612749-S18710558192014043000000) . Were any problems found? Yes Repair as necessary. Perform the PCM VERIFICATION TEST. Refer to appropriate Diagnostic Information . No Go To 3
3. (D65) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C3 harness connector. Disconnect the PCM C2 harness connector. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM connector and the PCM C2 connector. Is resistance below 5.0 Ohms? Yes Go To 4 No Repair the (D65) CAN C Bus (+) circuit for an open. Perform the PCM VERIFICATION TEST. Refer to appropriate Diagnostic Information .
4. (D64) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM connector and the PCM C2 connector. Is resistance below 5.0 Ohms? Yes Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the PCM VERIFICATION TEST. Refer to appropriate Diagnostic Information . No Repair the (D64) CAN C Bus (-) circuit for an open. Perform the PCM VERIFICATION TEST. Refer to appropriate Diagnostic Information .

Scheme 225

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, select ECU View. NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network. NOTE: Check the TIPM for any active CAN C hardware DTCs, perform DTC before proceeding. Does the scan tool display a red "X" next to the module? Yes Go To 2 No The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
2. (A952) FUSED B(+) CIRCUIT OPEN OR SHORTED Turn the ignition off. Disconnect the TCM C1 harness connector. Using a 12-volt test light connected to ground, check the (A952) Fused B(+) circuits. Does the test light illuminate brightly for each circuit? Yes Go To 3 No Repair the (A952) Fused B(+) circuit for an open or short. Perform the TRANSMISSION VERIFICATION TEST. Refer to appropriate Diagnostic Information .
3. (Z906) GROUND CIRCUIT OPEN Using a 12-volt test light connected to 12-volts, check each (Z906) ground circuits. Does the test light illuminate brightly for each circuit? Yes Go To 4 No Repair the (Z906) ground circuit for an open. Perform the TRANSMISSION VERIFICATION TEST. Refer to appropriate Diagnostic Information .
4. (T16) TRANSMISSION CONTROL OUTPUT CIRCUITS OPEN OR SHORTED Turn the ignition on. Using a 12-volt test light connected to ground, check the (T16) Transmission Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 No Repair the (T16) Transmission Control Output circuit for an open or short. Perform the TRANSMISSION VERIFICATION TEST. Refer to appropriate Diagnostic Information .
5. (D65) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C3 harness connector. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C3 harness connector and the TCM C1 harness connector. Is the resistance below 5.0 Ohms? Yes Go To 6 No Repair the (D65) CAN C Bus (+) circuit for an open. Perform the TRANSMISSION VERIFICATION TEST. Refer to appropriate Diagnostic Information .
6. (D64) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C3 harness connector and the TCM C1 harness connector. Is the resistance below 5.0 Ohms? Yes Replace and program the Transmission Control Module in accordance with the Service Information. Perform the TRANSMISSION VERIFICATION TEST. Refer to appropriate Diagnostic Information . No Repair the (D64) CAN C Bus (-) circuit for an open. Perform the TRANSMISSION VERIFICATION TEST. Refer to appropriate Diagnostic Information .

Scheme 226

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. VERIFY DTC IS STORED NOTE: Stored faults may indicate a customer perceived intermittent condition. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. With the scan tool, read stored DTCs. Is this DTC stored? Yes Go To 2 No Perform the appropriate diagnostic procedure.
2. CHECK THE ENVIRONMENTAL DATA With the scan tool, read the loss of communication environmental data. Does the loss of communication environmental odometer data match up to any of the previous service procedures listed in the possible causes or are there any stored CAN B or C hardware electrical, battery, ignition voltage, VIN missing/mismatch, TIPM configuration DTCs present with matching environmental data? Yes These DTCs may have been the result of other service procedures performed. Clear DTCs. No Go To 3
3. VERIFY INTERMITTENT LOST COMMUNICATION DTC - WIRING CONCERNS Turn the ignition on. With the scan tool, select Network View and select Advanced. Is there more than one ECU with stored DTCs "Logged Against" the module and one or more lost communication DTCs stored in the offending module? Yes Verify if the vehicle was recently in for this type of service. Otherwise, visually inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals. Repair as necessary. No Go To 4
4. VERIFY INTERMITTENT LOST COMMUNICATION DTC - OFFENDING MODULE Turn the ignition on. With the scan tool, select Network View and select Advanced. Is there more than one ECU with stored DTCs "Logged Against" the module and NO lost communication DTCs stored in the offending module? Yes Check for TSB(s) related to this offending module. No Go To 5
5. VERIFY INTERMITTENT LOST COMMUNICATION DTC - REPORTING MODULE Turn the ignition on. With the scan tool, select Network View and select Advanced. Is there ONLY ONE ECU with stored DTCs "Logged Against" the module? Yes Check for TSB(s) related to the module that set this DTC. No Verify if the vehicle was recently in for this type of service. Otherwise, visually inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals. Repair as necessary.