Dodge Viper SRT-10 (ZB). Manual — part 346
Symptom:
BCM - PWM DIMMING OUTPUT SHORT
When Monitored and Set Condition:
BCM - PWM DIMMING OUTPUT SHORT
When Monitored:
With the Park Lamps on.
Set Condition:
The BCM detects over current on a PWM Dimming Output circuit for 10
seconds.
POSSIBLE CAUSES
HVAC CONTROL
RADIO
PANEL LAMPS DRIVER CIRCUIT SHORT TO GROUND - HVAC
PANEL LAMPS DRIVER CIRCUIT SHORT TO GROUND - RADIO
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
NOTE: The only faults that will set this DTC are the Panel Lamps Dimmer
circuits to the Radio and the HVAC Control, or an internal short in the
Radio or HVAC Control.
Turn the ignition on.
With the DRBIII
t, erase BCM DTCs.
Turn the ignition off.
Disconnect the HVAC Control harness connector.
Actuate the Park Lamps.
Turn the ignition on.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display PWM DIMMING OUTPUT SHORT?
All
Yes
→ Go To 2
No
→ Replace the HVAC Control in accordance with the Service Infor-
mation.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, erase BCM DTCs.
Turn the ignition off.
Disconnect the Radio harness connector.
Actuate the Park Lamps.
Turn the ignition on.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display PWM DIMMING OUTPUT SHORT?
All
Yes
→ Go To 3
No
→ Replace the Radio in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
277
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the HVAC Control harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance between ground and the Panel Lamps Driver circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Panel Lamps Driver circuit for a short to ground
between the BCM and the HVAC Control .
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the BCM C4 harness connector.
Disconnect the Radio harness connector.
Measure the resistance between ground and the Panel Lamps Driver circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Panel Lamps Driver circuit for a short to ground
between the BCM and the Radio.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and program the Body Control Module in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
278
INSTRUMENT CLUSTER
BCM - PWM DIMMING OUTPUT SHORT —
Continued
Symptom:
BCM MESSAGES NOT RECEIVED
When Monitored and Set Condition:
BCM MESSAGES NOT RECEIVED
When Monitored:
With the ignition On.
Set Condition:
The Instrument Cluster detects no BCM messages for 6 seconds.
POSSIBLE CAUSES
NO RESPONSE - PCI BUS - BCM
INTERMITTENT CONDITION
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, attempt to I/D or communicate with the BCM.
Is there a response from the BCM?
All
Yes
→ Go To 2
No
→ Refer to symptom *BUS +/- SIGNALS OPEN FROM BCM in the
Communication category.
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, erase DTCs.
Cycle the ignition and wait approximately 1 minute.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
279
INSTRUMENT CLUSTER
Symptom:
EEPROM CHECKSUM FAILURE
When Monitored and Set Condition:
EEPROM CHECKSUM FAILURE
When Monitored:
With the ignition On.
Set Condition:
The Instrument Cluster detects EEPROM failure during the internal self
check.
POSSIBLE CAUSES
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, record and erase DTC’s.
Turn the ignition off, wait 15 seconds, then turn the ignition on.
With the DRBIII
t, read DTCs.
Did the Checksum DTC reset?
All
Yes
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
280
INSTRUMENT CLUSTER
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