Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
SCHEMATIC REFERENCE: Radio/Audio System Schematics | ||||
1 | Did you perform the Diagnostic System Check - Radio/Audio System? | -- | Go to Step 2 | |
2 |
Turn ON the radio. Is the radio reception clear? | -- | Go to Step 3 | |
3 | Inspect for proper connections at the antennas and the antenna module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 4 |
4 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 11 |
5 |
Does the voltage measure near the specified value? | 6 V-8 V | Go to Step 6 | Go to Step 12 |
6 | Is there poor or no reception only on AM? | -- | Go to Step 18 | Go to Step 7 |
7 |
Important:: Always zero the DMM before taking a resistance measurement to ensure an accurate reading. Does the resistance measure greater than the specified value? | 0.50 ohms | Go to Step 13 | Go to Step 8 |
8 |
Important:: Always zero the DMM before taking a resistance measurement to ensure an accurate reading. Measure resistance of the antenna cable center conductor between the radio and the antenna module. Does the resistance measure greater than the specified value? | 1.0 ohms | Go to Step 14 | Go to Step 9 |
9 |
Important:: Always zero the DMM before taking a resistance measurement to ensure an accurate reading. Measure resistance of the antenna cable center conductor between the front windshield antenna and the antenna module. Does the resistance measure greater than the specified value? | 0.50 ohms | Go to Step 14 | Go to Step 10 |
10 |
Does the FM reception remain poor? | -- | Go to Step 15 | Go to Step 16 |
11 | Test the battery positive voltage circuit for an open, short to ground or high resistance. Refer to Circuit Testing and Wiring Repairs in wiring repairs. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 16 |
12 | Test the FM composite signal circuit for an open, short to ground or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 16 |
13 | Test the antenna ground circuit for an open, or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 17 |
14 | Test the antenna center conductor for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 17 |
15 | Inspect for poor connections at the antenna module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 18 |
16 | Inspect for poor connections at the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 19 |
17 | Replace the appropriate coax cable. Refer to Radio Antenna Cable Extension Cable Replacement or Antenna Cable Replacement . Did you complete the replacement? | -- | Go to Step 20 | -- |
18 | Replace the antenna module. Refer to Radio Antenna Module Replacement in Entertainment. Did you complete the replacement? | -- | Go to Step 20 | -- |
19 |
Did you complete the replacement? | -- | Go to Step 20 | -- |
20 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
