2010 Cadillac CTS Sedan AWD V6-3.6L Page 777
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
5. Ignition OFF, disconnect the X1 harness connector at the EBCM.
6. Ignition OFF, test for infinite resistance between the signal circuit terminal 21 and ground.
瀚慖f not the specified value, test the signal circuit for a short to ground.
7. If all circuits test normal, test or replace the power brake booster vacuum sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay
Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power
Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup and programming
P000A
DTC P000A-P000D, P0011, P0014, P0021, or P0024 (Without LF1)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P000A
- Intake Camshaft Position System Slow Response Bank 1
DTC P000B
- Exhaust Camshaft Position System Slow Response Bank 1
DTC P000C
- Intake Camshaft Position System Slow Response Bank 2
DTC P000D
- Exhaust Camshaft Position System Slow Response Bank 2
DTC P0011
- Intake Camshaft Position System Performance Bank 1
DTC P0014
- Exhaust Camshaft Position System Performance Bank 1
DTC P0021
- Intake Camshaft Position System Performance Bank 2
DTC P0024
- Exhaust Camshaft Position System Performance Bank 2
Circuit/System Description
The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is
operating. The camshaft position actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position
actuator solenoid duty cycle by controlling the amount of solenoid ON time. The camshaft position actuator solenoid controls the advance or the
retard of each camshaft. The camshaft position actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.
Conditions for Running the DTC
* Before the ECM can report DTC P000A, P000B, P000C, P000D, P0011, P0014, P0021, or P0024 failed, DTCs P0010, P0013, P0020,
P0023, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092,
P2093, P2094, and P2095 must run and pass.
* DTC P0016, P0017, P0018, P0019, P0335, P0336, or P0338 is not set.
