C5 Determine Location of Resistance Fault

- Disconnect the 12-pin connector from the HCU.

NOTE: Refer to the previous schematic for valve block pin designations.

- Measure resistance between the following on the component side of the 12-way:

- Pin 6 and Pin 4

- Pin 6 and Pin 10

- What resistance is measured?

Less than 3 ohms or more than 6 ohms on any measurement. Replace HCU. Bleed system with NGS. Go to C13 to verify concern is resolved.

3-6 ohms on all measurements and Code C1200 was obtained HCU is OK. Find and repair source of high resistance in Circuit 495 (T) between the antilock brake control module and HCU. Go to C13 to verify concern is resolved. C13 Verify Concern Is Resolved

3-6 ohms on all measurements and Code C1198 was obtained HCU is OK. Find and repair source of low resistance in Circuit 495 (T) between the antilock brake control module and HCU. Go to C13 to verify concern is resolved. C13 Verify Concern Is Resolved