Dtc P1702: Internal Control Module Memory Check Sum Error; Dtc P1703: Can Invalid Data - Tcm - Suzuki Grand Vitara 2011 Manual

5A-67 Automatic Transmission/Transaxle:

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: For Petrol
Engine Model in Section 1A".
Is there any DTC(s)?
Action
Trouble Area
TCM
Trouble Area
• Engine control system
• TCM
• ECM
Yes
Go to Step 2.
Go to applicable DTC
troubleshooting.
S6JB0A5104038
S6JB0A5104039
No
Go to "A/T System
Check".
Substitute a known-
good TCM and recheck.