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PINPOINT TEST M: DTC C1288 - PRIMARY BRAKE PRESSURE SENSOR INPUT CIRCUIT FAILURE

Test M1:

Test M2 - M3:

Test M4 - M5:

Test M5:

NOTE: When diagnosing this DTC, the primary brake pressure sensor is the C147 pin 1, Circuit 9-CF64 (BN/YE). The pressure sensor connectors can be connected to either the primary or the secondary pressure sensor and still operate correctly, therefore the wire color must be looked at before continuing diagnostics.