| 1 |
INSPECT TUNER AND AMP UNIT (TAU) CONNECTOR CONDITION
- Switch the ignition off.
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Disconnect the tuner and amp unit (TAU) connector.
- Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
- Is the connector normal?
|
Yes |
Go to the next step. |
| No |
Repair or replace the connector, then go to Step 7. |
| 2 |
INSPECT CONNECTIVITY MASTER UNIT (CMU) CONNECTOR CONDITION
- Disconnect the connectivity master unit (CMU) connector.
- Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
- Is the connector normal?
|
Yes |
Go to the next step. |
| No |
Repair or replace the connector, then go to Step 7. |
| 3 |
INSPECT RDS TRAFFIC INFORMATION TRANSFER CIRCUIT FOR SHORT TO GROUND
- Verify that the tuner and amp unit (TAU) and connectivity master unit (CMU) connectors are disconnected.
- Inspect for continuity between the following terminals (wiring harness-side) and body ground:
- Tuner and amp unit (TAU) terminal 1W
- Tuner and amp unit (TAU) terminal 1X
- Is there continuity?
|
Yes |
Refer to the wiring diagram and verify if there is a common connector between the following terminals:
- Connectivity master unit (CMU) terminal 2O-Tuner and amp unit (TAU) terminal 1W
- Connectivity master unit (CMU) terminal 2P-Tuner and amp unit (TAU) terminal 1X
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
Go to Step 7. |
| No |
Go to the next step. |
| 4 |
INSPECT RDS TRAFFIC INFORMATION TRANSFER CIRCUIT FOR SHORT TO POWER SUPPLY
- Verify that the tuner and amp unit (TAU) and connectivity master unit (CMU) connectors are disconnected.
- Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Switch the ignition ON (engine off or on).
- Measure the voltage at the following terminals (wiring harness-side):
- Tuner and amp unit (TAU) terminal 1W
- Tuner and amp unit (TAU) terminal 1X
- Is the voltage 0 V?
|
Yes |
Go to the next step. |
| No |
Refer to the wiring diagram and verify if there is a common connector between the following terminals:
- Connectivity master unit (CMU) terminal 2O-Tuner and amp unit (TAU) terminal 1W
- Connectivity master unit (CMU) terminal 2P-Tuner and amp unit (TAU) terminal 1X
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which has a short to power supply.
Go to Step 7. |
| 5 |
INSPECT RDS TRAFFIC INFORMATION TRANSFER CIRCUIT FOR OPEN CIRCUIT
- Switch the ignition off.
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Verify that the tuner and amp unit (TAU) and connectivity master unit (CMU) connectors are disconnected.
- Inspect the wiring harness for continuity between the following terminals (wiring harness-side):
- Connectivity master unit (CMU) terminal 2O-Tuner and amp unit (TAU) terminal 1W
- Connectivity master unit (CMU) terminal 2P-Tuner and amp unit (TAU) terminal 1X
- Is there continuity?
|
Yes |
Go to the next step. |
| No |
Refer to the wiring diagram and verify if there is a common connector between the following terminals:
- Connectivity master unit (CMU) terminal 2O-Tuner and amp unit (TAU) terminal 1W
- Connectivity master unit (CMU) terminal 2P-Tuner and amp unit (TAU) terminal 1X
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which has an open circuit.
Go to Step 7. |
| 6 |
VERIFY IF MALFUNCTIONING LOCATION IS TUNER AND AMP UNIT (TAU) DEPENDING ON REPEATABILITY
|
Yes |
Replace the tuner and amp unit (TAU), then go to the next step.
(See TUNER AND AMP UNIT (TAU) REMOVAL/INSTALLATION
.) |
| No |
Go to Step 8. |
| 7 |
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
|
Yes |
Repeat the inspection from Step 1.
Go to the next step. |
| No |
Go to the next step. |
| 8 |
VERIFY IF OTHER DTCs DISPLAYED
- Are any other DTCs displayed?
|
Yes |
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [CONNECTIVITY MASTER UNIT] .) |
| No |
DTC troubleshooting completed. |