Pinpoint Test R: DTC C1288
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- R1 CHECK FOR FAULT REPEATABILITY
- Connect the scan tool.
- Ignition ON.
- Using the scan tool, clear the ABS module DTCs.
- Drive the vehicle at least 20 km/h (12 mph).
- Enter the following diagnostic mode on the scan tool: Self-Test - ABS Module.
- Is DTC C1288 present?
- Yes : GO to R2.
- No : INSPECT the ABS module and HCU for damage. REPAIR or INSTALL new as necessary. If any other DTCs are retrieved, REFER to the ABS Module DTC Chart in this information.
- R2 VERIFY THE ABS MODULE FASTENERS ARE TIGHTENED CORRECTLY
- Ignition OFF.
- Loosen each ABS module fastener and tighten to the correct torque specification. Refer to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE in this information for the correct torque specification.
- Ignition ON.
- Using the scan tool, clear the ABS module DTCs.
- Drive the vehicle at least 20 km/h (12 mph).
- Enter the following diagnostic mode on the scan tool: Self-Test - ABS Module.
- Is DTC C1288 present?
- Yes : GO to R3.
- No : The system is operating correctly at this time. The concern may have been caused by an incorrectly installed ABS module. RETURN the vehicle to the customer.
- R3 MONITOR THE PRESSURE TRANSDUCER (XDUCERCAL) PID
- Ignition OFF.
- Disconnect: ABS Module C135.
- Separate the ABS module from the HCU. Refer to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE in this information.
- Connect: ABS Module C135.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
- With the ABS module separated from the HCU, monitor the XDUCERCAL PID.
- Does the PID read less than 19, 000 kPa (2, 756 psi)?
- Yes : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE in this information. CLEAR the DTCs. REPEAT the self-test.
- No : INSTALL a new HCU. REFER to HYDRAULIC CONTROL UNIT (HCU) in this information. CLEAR the DTCs. REPEAT the self-test.