Dtc P1702 Internal Control Module Memory Check Sum Error; Dtc P1703 Can Invalid Data - Tcm - Suzuki Grand Vitara Manual

5A-62 Automatic Transmission/Transaxle:
Step
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?

DTC P1702 Internal Control Module Memory Check Sum Error

DTC Detecting Condition and Trouble Area
DTC Detecting Condition
An internal TCM fault is detected by TCM
(1 driving cycle detection logic)
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

DTC Detecting Condition and Trouble Area
DTC Detecting Condition
When abnormality on the gear shift control signal from ECM is
detected by TCM, TCM sets DTC P1703.
(1 driving cycle detection logic)
DTC Troubleshooting
Step
1 Was "A/T System Check" performed?
2 DTC Check
Check DTC of ECM referring to "DTC Check: in Section
1A".
Is there any DTC(s)?
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Action
Action
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Yes
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.
Trouble Area
TCM
Trouble Area
• Engine control system
• TCM
• ECM
Yes
Go to Step 2.
Go to applicable DTC
troubleshooting.
No
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: ".
S5JB0A5104044
S5JB0A5104045
No
Go to "A/T System
Check: ".
Substitute a known-
good TCM and recheck.