C1702
DTC C1702 VARIANT CODING ERRORCOMPONENT LOCATION
Refer to DTC C1235. C1235
GENERAL DESCRIPTION
There is no hardware difference of the HECU according to the vehicle's specification, just software is changed by the vehicle parameter used for ESC control. The HECU stores a classified variant code value according to the received data (a kind of engine, engine displacement, a kind of T/M). After then the HECU reads a various parameters according to the stored variant value in the memory to use for the ESC control.
DTC DESCRIPTION
The HECU checks the variant code after ignition. If a inappropriate variant code is detected or there is no variant code, a fault is detected.
DTC DETECTING CONDITION:
MONITOR SCANTOOL DATA
VARIANT CODE
1. Check for improper installation of EMS/TCU/ESC.
2. Connect scan tool to Data Link Connector(DLC).
3. Ignition "ON".
4. Go in Anti-Lock brake system (figure 1).
5. Perform variant code.
6. Disconnect scan tool.
7. Ignition "OFF" and then ignition "ON". Go to "Component Inspection" Procedure.
COMPONENT INSPECTION
1. Ignition"OFF".
2. Engine "ON".
3. Does warning lamp remain On?
YES
^ Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure.
NO
^ Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.
VERIFICATION OF VEHICLE REPAIR
Refer to DTC C1101. C1101