Pinpoint Test V : The Remote Start Feature Starts But Then Stalls

• Ignition ON.

• Using a diagnostic scan too, carry out the BCM self-test.

Are any battery monitoring sensor Diagnostic Trouble Codes (DTCs) present? 

• Using a diagnostic scan tool, retrieve the Continuous Mode Diagnostic Trouble Codes (CMDTCs) from all modules.

Are any charging system or battery voltage Diagnostic Trouble Codes (DTCs) present? 

• Review the results from the self-test.

Are network communication Diagnostic Trouble Codes (DTCs) present? 

• Using the steering wheel control switch, check remote start feature setting in the message center.

Is the remote start feature enabled? 

• Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any PCM Diagnostic Trouble Codes (DTCs) present? 

• Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC P1594:04 present? 

• Review the results from the BCM self-test.

Are any other BCM Diagnostic Trouble Codes (DTCs) besides P1594:04 present? 

• Using a diagnostic scan tool, view the snapshot data for BCM DTC P1594:04.

  BCM DTC P1594:04 Trigger Event 

  NOTE: This table is not all inclusive of the items displayed from the trigger event. All items should report as false for the remote start system to operate.

  Scan Tool Display	Event detected that caused the engine to shutdown
  ALARM_MODE_ACT	The perimeter alarm activated when the BCM detected an unauthorized entry.
  CRASH_FLAG	The BCM received information from the RCM indicating a crash event occurred. This can be reset using a diagnostic scan tool.
  DTC U0100:00 set - Lost com w/ PCM	The BCM lost communication with the PCM.
  DTC U0101:00 set - Lost com w/ TCM	The BCM lost communication with the TCM.
  DTC U0155:00 set - Lost com w/ IPC	The BCM lost communication with the IPC.
  DTC U0293:00 set - Lost com w/ PCM/SOBDMC	The BCM lost communication with the SOBDMC.
  DTC U0515:00 set - Invalid data from RFA	The BCM lost communication with the RFA module.
  DTC U3003:16 set - Battery Voltage Low	The BCM detected low battery voltage.
  DTC U3003:17 set - Battery Voltage High	The BCM detected high battery voltage.
  DTC U0101:00 set - Lost com w/ BEV TCM	The BCM lost communication with the TCM.
  EngAout_N_Actl reach Rstart max speed	The BCM received information from the ABS module that indicated the vehicle was moving.
  Engine Speed QF not ok	The BCM received information from the ABS module that indicated a concern with the integrity of the wheel speed sensor inputs.
  HOOD_OPEN	The BCM detected the hood was open.
  PATS System error	The RFA module communicated to the BCM that a valid programmed key was not detected when an attempt to drive the vehicle during remote start operation occurred.
  PATS malfunction - PCM/BCM Com error	The BCM and PCM failed the challenge request during the PATS operation. Lost communication to the PCM can also cause this.
  Rem Start disabled - BCM/IPC com error	The IPC reported the remote start feature disabled or the BCM lost communication with the IPC.
  PATS target ID not stored	The BCM programmed key IDs were erased.
  PWR_SYS_STAT	The BCM detected a concern with the battery monitoring sensor, battery voltage or the charging system.
  Vehicle Speed not zero or bad ABS data	The BCM detected the vehicle was moving based on vehicle speed data sent from the ABS module.
  Bad speed signal from ABS - ABS failure	The BCM received invalid vehicle speed data from the ABS module.

Does any item listed in the scan tool display in the above table indicate TRUE? 

• Disconnect and inspect all of the BCM connectors.

• Repair:
  • corrosion (install new connectors or terminals-clean module pins)
  • damaged or bent pins- install new terminals pins
  • pushed-out pins- install new pins as necessary

• Reconnect all the BCM connectors and make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Is the concern still present?