Dodge Viper SRT-10 (ZB). Manual — part 319
Symptom:
*NO RESPONSE FROM RADIO
POSSIBLE CAUSES
NO RESPONSE FROM RADIO
OPEN RUN/ACC RELAY CONTROL CIRCUIT
OPEN FUSED B+ CIRCUIT
GROUND CIRCUIT OPEN
OPEN PCI BUS CIRCUIT
RADIO
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Note: As soon as one or more module communicates with the DRB, answer
the question.
With the DRB, attempt to communicate with the Airbag Control Module.
With the DRB, attempt to communicate with the Body Control Module (BCM).
Was the DRB able to I/D or establish communications with either of the modules?
All
Yes
→ Go To 2
No
→ Refer to the Communications category and perform the symptom
PCI Bus Communication Failure.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Radio harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the RUN/ACC Relay Control
circuit.
Is the test light illuminated?
All
Yes
→ Go To 3
No
→ Repair the RUN/ACC Relay Control circuit for an open or short.
Refer to the wiring diagrams located in the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Radio harness connector.
Using a 12-volt test light connected to ground, probe both Fused B+ circuits.
Is the test light illuminated for each circuit?
All
Yes
→ Go To 4
No
→ Repair the Fused B+ circuit for an open or short. Refer to the
wiring diagrams located in the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
169
COMMUNICATION
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Radio harness connector.
Using a 12-volt test light connected to 12-volts, probe both ground circuits.
Is the test light illuminated for each circuit?
All
Yes
→ Go To 5
No
→ Repair the ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5
Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the Radio harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
With the DRBIII
t select Pep Module Tools.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the Radio connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?
All
Yes
→ Go To 6
No
→ Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace the Radio.
Perform BODY VERIFICATION TEST - VER 1.
170
COMMUNICATION
*NO RESPONSE FROM RADIO —
Continued
Symptom:
*NO RESPONSE FROM TIRE PRESSURE MONITOR MODULE
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
GROUND CIRCUIT OPEN
SCI TRANSMIT CIRCUIT OPEN
TIRE PRESSURE MONITOR MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, attempt to communicate with the PCM.
Was the DRB able to I/D or communicate with the PCM?
All
Yes
→ Go To 2
No
→ Refer to the symptom list for problems related to no communica-
tion with the PCM.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
2
Turn the ignition off.
Disconnect the Tire Pressure Monitor Module harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output circuit.
Is the test light illuminated?
All
Yes
→ Go To 3
No
→ Repair the Fused Ignition Switch Output circuit for an open.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
3
Turn the ignition off.
Disconnect the Tire Pressure Monitor Module harness connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
Is the test light illuminated?
All
Yes
→ Go To 4
No
→ Repair the ground circuit for an open.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
171
COMMUNICATION
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Tire Pressure Monitor Module harness connector.
Disconnect the DRBIII
t from the DLC.
Measure the resistance of the SCI Transmit circuit between the Tire Pressure
Monitor Module connector and the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace and program the Tire Pressure Monitor Module in
accordance with the Service Information.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
No
→ Repair the SCI Transmit circuit for an open.
Perform TIRE PRESSURE MONITORING SYSTEM VERIFICA-
TION TEST.
172
COMMUNICATION
*NO RESPONSE FROM TIRE PRESSURE MONITOR MODULE —
Continued
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