DTC P1703 (No.86): CAN Invalid Data from Other ECU (M13A Model with VVT)
DTC Detecting Condition and Trouble Area
When abnormality either on the gear shift control signal from ECM is detected by TCM, TCM sets DTC P1703.
DTC Troubleshooting
Step Action YES NO
Was A/T System Check performed?
Go to Step 2.
DTC check
Check DTC of ECM referring to DTC Check:M13A with VVT .
Is there any DTC(s)?
Go to applicable DTC diag. flow.
Substitute a known-good TCM and recheck.
If OK, substitute a known-good ECM and recheck.