Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSJEEP2007GRAND CHEROKEE 2WD V6-3.7L VIN KREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONC CODE CHARTSC1243
2007 Jeep Grand Cherokee 2WD V6-3.7L VIN K
C1243
2007 Jeep Grand Cherokee 2WD V6-3.7L VIN KSECTION C1243
C1243-G SENSOR NOT INITIALIZED
For a complete wiring diagram, refer to Diagrams/Electrical. Electrical Diagrams
- When Monitored:
Once after ignition on.
- Set Condition:
If the stored zero point calibration value of the longitudinal acceleration sensor is invalid.
Diagnostic Test
1. PERFORM ECU INITIALIZATION
Turn the ignition on.
With the scan tool, erase ABS DTCs.
Cycle the ignition switch.
WARNING: Ensure brake capability is available before road testing.
Perform ECU initialization with drive test. Perform ABS VERIFICATION TEST. ABS Verification Test
NOTE: The ECU Initialization process must include driving the vehicle into a 90οΏ½ turn.
Park the vehicle.
Does this DTC reset?
Yes
-
NOTE: Vehicles without a Dynamics Sensor replace Anti-Lock Brake Module.
Replace the Dynamics Sensor.
- Perform ABS VERIFICATION TEST. ABS Verification Test
No
- Refer to the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.