[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - INSPECTION PROCEDURE FOR DIAGNOSIS CODES - DTC P1602: Communication Malfunction (between Engine-A/T-ECU Main Processor and System LSI)PRINT PAGE / INDEX / PRIOR / NEXT
DTC P1602: Communication Malfunction (between Engine-A/T-ECU Main Processor and System LSI)
FUNCTION
  • Engine-A/T-ECU checks the communication status for abnormal conditions.
TROUBLE JUDGMENT
Check Condition
  • Ignition switch is "ON" position.
Judgement Criterion
  • Engine-A/T-ECU detects an error in communication with the throttle actuator control module for 0.07 second.
PROBALE CAUSE
  • Failed engine-A/T-ECU
DIAGNOSIS
STEP 1. Check the trouble symptoms.
Q: Does trouble symptom persist?
YES:  Replace engine-A/T-ECU.
NO:  Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - INSPECTION PROCEDURE FOR DIAGNOSIS CODES - DTC P1602: Communication Malfunction (between Engine-A/T-ECU Main Processor and System LSI)PRINT PAGE / INDEX / PRIOR / NEXT
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