5A-62 Automatic Transmission/Transaxle:
DTC P1702 Internal Control Module Memory Check Sum Error
S5JB0A5104044
DTC Detecting Condition and Trouble Area
NOTE
DTC P1702 can never be cleared once it has been set.
1) Ignition switch OFF.
2) Replace TCM.
3) Repeat “A/T System Check: ”.
DTC P1703 CAN Invalid Data - TCM
S5JB0A5104045
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
4 Inspection solenoid valve
1) Inspection solenoid valve referring to “Solenoid Valves
(Shift Solenoid-A, Shift Solenoid-B, TCC Pressure
Control Solenoid and Pressure Control Solenoid
Inspection: ”.
Is check results satisfactory?
Intermittent trouble or
faulty TCM. Check for
intermittent trouble
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”. If OK, substitute a
known-good TCM and
recheck.
Replace defective
solenoid valve referring
to “Solenoid Valves
(Shift Solenoid-A, Shift
Solenoid-B, TCC
Pressure Control
Solenoid and Pressure
Control Solenoid
Removal and
Installation: ”.
Step Action Yes No
DTC Detecting Condition Trouble Area
An internal TCM fault is detected by TCM
(1 driving cycle detection logic)
TCM
DTC Detecting Condition Trouble Area
When abnormality on the gear shift control signal from ECM is
detected by TCM, TCM sets DTC P1703.
(1 driving cycle detection logic)
• Engine control system
•TCM
•ECM
Step Action Yes No
1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check: ”.
2 DTC Check
Check DTC of ECM referring to “DTC Check: in Section
1A”.
Is there any DTC(s)?
Go to applicable DTC
troubleshooting.
Substitute a known-
good TCM and recheck.
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