*NO RESPONSE FROM SDAR (SATELLITE RECEIVER)

For a complete wiring diagram Refer to Section 8W.

Possible Causes

(Z515) GROUND CIRCUIT OPEN

(X160) FUSED B(+) CIRCUIT OPEN

(X112) IGNITION RUN/ACC SIGNAL CIRCUIT OPEN

(D25) PCI BUS CIRCUIT OPEN

RADIO

HANDS FREE MODULE

SATELLITE RECEIVER

Diagnostic Test

1. ESTABLISH COMMUNICATION WITH RADIO AND HANDS FREE MODULE (IF EQUIPPED) ON PCI BUS

Turn the ignition on.

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

With the scan tool, select ECU view.

NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.

Does the scan tool communicate with the Radio and Hands Free Module?

Yes

Go To 2

Perform the appropriate no response test. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING)

2. VISUALLY INSPECT THE RADIO AND SATELLITE RECEIVER CONNECTORS

Turn the ignition off.
Disconnect the Radio C2 harness connector.
Disconnect the Satellite Receiver harness connector.
Visually inspect the connectors for damage and pushed out pins.

NOTE: If the vehicle is equipped with a Hands Free Phone module, check the connectors. This device is a pass through for the satellite receiver circuits.

Was any damage found?

Yes

Repair as necessary.

Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Go To 3

3. (Z515) GROUND CIRCUIT OPEN

Reconnect the Radio C2 harness connector.

NOTE: If the vehicle is equipped with a Hands Free Phone module, check the connectors. This device is a pass through for the satellite receiver circuits.

Using a 12-volt test light connected to 12-volts, probe the (Z515) ground circuit.

Does the test light illuminate brightly?

Yes

Go To 4

Repair the (Z515) Ground circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

4. (X112) IGNITION RUN/ACC SIGNAL CIRCUIT OPEN

NOTE: If the vehicle is equipped with a Hands Free Phone module, check the connectors. This device is a pass through for the satellite receiver circuits.

Turn the ignition on.
Using a 12-volt test light connected to ground, probe the (X112) Ignition Run/Acc Signal circuit.

Does the test light illuminate brightly?

Yes

Go To 5

Repair the (X112) Ignition Run/Acc Signal circuit for an open. If ok, replace the Radio.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

5. (X160) FUSED B(+) CIRCUIT OPEN

NOTE: If the vehicle is equipped with a Hands Free Phone module, check the connectors. This device is a pass through for the satellite receiver circuits.

Using a 12-volt test light connected to ground, probe the (X160) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes

Go To 6

Repair the (X160) Fused B(+) circuit for an open. If ok, replace the Radio.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

6. (D25) PCI BUS CIRCUIT OPEN

Turn the ignition off.
Disconnect the Radio C2 harness connector.

NOTE: If equipped disconnect the HFM C2 harness connector.

Measure the resistance of the (D25) PCI Bus circuit between either the Radio C2 harness connector (or if equipped the HFM C2 harness connector) and the Satellite Receiver harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the Satellite Receiver in accordance with the service information.

Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Repair the (D25) PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).