NO RESPONSE FROM AMP (AMPLIFIER)
NO RESPONSE FROM AMP (AMPLIFIER)
 |
For a complete wiring diagram, refer to the Wiring Information.
Possible Causes |
|---|
| (A116) FUSED B (+) (I.O.D.) CIRCUIT OPEN OR SHORTED |
| (Z910) GROUND CIRCUIT OPEN |
| (D264) AND (D265) CAN C INTERIOR BUS (125K) CIRCUITS OPEN |
| AMPLIFIER |
1. TEST FOR INTERMITTENT CONDITION
| 1. | Turn the ignition on. |
| NOTE: | Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. |
| 2. | 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 display a red "X" next to the module?
Yes
- Go To 2
No
- The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
2. (A116) FUSED B(+) (I.O.D.) CIRCUIT OPEN OR SHORTED
 |
| 1. | Turn the ignition off. |
| 2. | Disconnect the Radio Amplifier C1 harness connector. |
| 3. | Using a 12-volt test light connected to ground, check the (A116) Fused B(+) (I.O.D.) circuit. |
Does the test light illuminate brightly?
Yes
- Go To 3
No
- Repair the (A116) Fused B(+) (I.O.D.) circuit for an open or short.
-
Perform the
BODY VERIFICATION TEST. (Refer
to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM)
- Standard Procedure)
 |
| 1. | Using a 12-volt test light connected to 12-volts, check the (Z910) ground circuit. |
Does the test light illuminate brightly for each circuit?
Yes
- Go To 4
No
- Repair the (Z910) ground circuit for an open.
-
Perform the
BODY VERIFICATION TEST. (Refer
to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM)
- Standard Procedure)
4. (D265) OR (D264) CAN C INTERIOR BUS (125K) CIRCUIT OPEN
 |
| 1. | Measure the resistance of the (D264) CAN C Interior Bus (-) (125K) circuit between the TIPM C7 harness connector and the Radio Amplifier C1 harness connector. |
| 2. | Measure the resistance of the (D265) CAN C Interior Bus (+) (125K) circuit between the TIPM C7 harness connector and the Radio Amplifier C1 harness connector. |
Is resistance below 5.0 ohms on both circuits?
Yes
- Replace the Radio Amplifier in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)
No
- Repair the (D265) or (D264) CAN C Interior Bus (125K) circuit for an open. Inspect the connector for damage.
-
Perform the
BODY VERIFICATION TEST. (Refer
to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM)
- Standard Procedure)