NO RESPONSE FROM RADIO - START/STOP

For a complete wiring diagram, refer to the Wiring Information.

Possible Causes
(A973) FUSED B(+) CIRCUIT OPEN OR SHORTED
(Z916) GROUND CIRCUIT OPEN
(D265) AND (D264) CAN C INTERIOR BUS (125K) CIRCUITS OPEN
RADIO

1. TEST FOR INTERMITTENT CONDITION

NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.

1.	Turn the ignition on.

NOTE: Make sure the battery voltage is between 10.0 and 16.0 volts.

2.	With the scan tool, read the module status.

NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding.

Does the scan tool indicate that the module is active on the bus?

Yes

The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

Go To 2

2. CHECK THE (A973) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT

1.	Turn the ignition off.

2.	Disconnect the Radio harness connector.

3.	Using a 12-volt test light connected to ground, check the (A973) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes

Go To 3

Repair the open or short in the (A973) Fused B(+) circuit.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

3. CHECK THE (Z916) GROUND CIRCUIT FOR AN OPEN

1.	Using a 12-volt test light connected to 12-volts, check the (Z916) Ground circuit.

Does the test light illuminate brightly?

Yes

Go To 4

Repair the open in the (Z916) Ground circuit.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

4. CHECK THE (D265) OR (D264) CAN C INTERIOR BUS (125K) CIRCUIT FOR AN OPEN

1.	Measure the resistance of the (D264) CAN C Interior Bus (-) (125K) circuit between the TIPM C7 harness connector and the Radio harness connector.

2.	Measure the resistance of the (D265) CAN C Interior Bus (+) (125K) circuit between the TIPM C7 harness connector and the Radio harness connector.

Is resistance below 5.0 Ohms on both circuits?

Yes

Replace the Radio in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Repair the open in the (D265) or (D264) CAN C Interior Bus (125K) circuit. Inspect the connector for damage.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

NO RESPONSE FROM RADIO - START/STOP

Possible Causes