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Electronic Shift Module (Esm) - Electrical Diagnostics: Diagnosis Jeep Liberty II

Communication Devices ~540 words

DIAGNOSTIC CODE INDEX

DTCDescription
P0562BATTERY VOLTAGE LOW
P0563BATTERY VOLTAGE HIGH
P0607ECU INTERNAL PERFORMANCE
P0930BTSI CONTROL CIRCUIT LOW
P0931BTSI CONTROL CIRCUIT HIGH
P2775AUTOSTICK UPSHIFT SWITCH CIRCUIT PERFORMANCE
P2779AUTOSTICK DOWNSHIFT SWITCH CIRCUIT PERFORMANCE
U0002CAN C BUS OFF PERFORMANCE
U0100LOST COMMUNICATION WITH ECM/PCM
U0121LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE
U0141LOST COMMUNICATION WITH FRONT CONTROL MODULE

DIAGNOSTIC CODE INDEX

Diagnostic Test

  1. CHECK FOR CHARGING SYSTEM DTCS With the scan tool, read Engine DTCs. NOTE: This includes any one trip faults. Are there any Engine Charging System DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) . No Go to step 2
  2. VEHICLE WAS JUMP STARTED INCORRECTLY Verify if the vehicle was jump started by another vehicle using a 24-volt charging system or incorrectly jump started with the 12 volt battery in series. Was the vehicle jump started by another vehicle? Yes This is the cause of the DTC. Erase the DTC and return the vehicle to the customer. Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) . No Go to step 3
  3. CHECK SYSTEM VOLTAGE Start the engine and let idle for at least 10 seconds. With the scan tool, monitor system voltage. Is the system voltage above 16V for more than 5 seconds? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) . No Go to step 4
  4. SHIFT LEVER ASSEMBLY Reconnect all disconnected harness connectors. With the scan tool, erase Shift Lever DTCs. Start the engine and raise the engine speed to 2000 RPM. With the scan tool, read Shift Lever DTCs. Did the P0563-BATTERY VOLTAGE HIGH DTC reset? Yes Replace the Shift Lever Assembly in accordance with the Service Information Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) . No Test Complete.
  1. SHIFTER LEVER ASSEMBLY Repair Using the schematics as a guide, check the Shift Lever Assembly Control Module terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Shift Lever Assembly in accordance with the Service Information. Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) .
  1. SHIFT LEVER ASSEMBLY Repair Using the schematics as a guide, check the Shift Lever Assembly (SLA) Electronic Shift Module (ESM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Shift Lever Assembly in accordance with the Service Information. Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) .
  1. SHIFT LEVER ASSEMBLY Repair Using the schematics as a guide, check the Shift Lever Assembly (SLA) Electronic Shift Module (ESM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Shift Lever Assembly in accordance with the Service Information. Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure»(ref-350086-S21105755262009121400000) .

Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure.

Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure.

Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure.

Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure.

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