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DTC No. P1A29-49 PHEV-ECU AD converter Malfunction
DTC No. P1A2A-45 PHEV-ECU Non-Volatile Random Access Memory Malfunction
 
 
 
 
MONITOR EXECUTION <DTC No. P1A29-49>
Continuous
 
 
MONITOR EXECUTION <DTC No. P1A2A-45>
Once per driving cycle
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart <DTC No. P1A29-49>
Logic Flow Chart <DTC No. P1A2A-45>
Check Condition <DTC No. P1A29-49 (1)>
  • The PHEV-ECU power supply voltage is 8.0 volts or more for 1.5 seconds or more.
  • Transistor to input port of microcomputer: ON
  • The APPS (sub) voltage is between 0.15 volts and 2.41 volts.
Check Condition <DTC No. P1A29-49 (2), DTC No. P1A2A-45>
  • The PHEV-ECU power supply voltage is 8.0 volts or more.
Judgment Criterion <DTC No. P1A29-49 (1)>
  • AD value [for APPS(sub)] is 0.2 volts or less for 0.45 second or more.
Judgment Criterion <DTC No. P1A29-49 (2)>
  • The status is in Fail condition.
Judgment Criterion <DTC No. P1A25-45>
  • The status is in Fail condition ten times.
 
 
OBD-II DRIVE CYCLE PATTERN
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the PHEV-ECU
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle OBD-II DRIVE CYCLE.
(2) Check the DTC.
Is the DTC set?
Replace the PHEV-ECU (Refer to PHEV-ECU REMOVAL AND INSTALLATION). Then,
The trouble can be an intermittent malfunction (Refer to General Information - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
 
2.Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle OBD-II DRIVE CYCLE.
(2) Check the DTC.
Is the DTC set?
Retry the troubleshooting.
The procedure is complete.