Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 565
U0025 CAN B BUS (-) CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
8M - 130
MESSAGE CENTER - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
With the ignition switch on.
•
Set Condition:
The Multi-Purpose Module (Police And Taxi Interface Module-PTIM) has detected the (W527) VSIM CAN B
Bus (-) circuit is below a calibrated value.
Possible Causes
(W527) VSIM CAN B BUS (-) CIRCUIT SHORTED TO GROUND
MULTI-PURPOSE MODULE (POLICE AND TAXI INTERFACE MODULE-PTIM)
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
With the scan tool, read the active DTCs.
Erase the DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2.
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals, and repair any obvious problems.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
2.
CHECK (W527) VSIM CAN B BUS (-) CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
Disconnect the Multi-Purpose Module (Police And Taxi Interface Mod-
ule-PTIM) C2 harness connector.
Disconnect the Multi-Purpose Module (Police And Taxi Interface Mod-
ule-PTIM) 24 way harness connector (aftermarket light/siren controller
side).
Disconnect the scan tool from the DLC.
Measure the resistance between ground and the (W527) VSIM CAN B
Bus (-) circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (W527) VSIM CAN B Bus (+) circuit for a short
to ground.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
No
>> Inspect the wiring and connectors for damage or shorted
circuits. If ok, replace the Multi-Purpose Module (Police And
Taxi Interface Module-PTIM) in accordance with the service
information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
LX
MESSAGE CENTER - ELECTRICAL DIAGNOSTICS
8M - 131
U0026 — CAN B BUS (-) CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
8M - 132
MESSAGE CENTER - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
With the ignition switch on.
•
Set Condition:
The Multi-Purpose Module (Police And Taxi Interface Module-PTIM) has detected the (W527) VSIM CAN B
Bus (-) circuit is above a calibrated value.
Possible Causes
(W528) VSIM CAN B BUS (+) CIRCUIT SHORTED TO VOLTAGE
(W527) VSIM CAN B BUS (-) CIRCUIT SHORTED TO VOLTAGE
MULTI-PURPOSE MODULE (POLICE AND TAXI INTERFACE MODULE-PTIM)
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
With the scan tool, read the active DTCs.
Erase the DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2.
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals, and repair any obvious problems.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
2.
VSIM CAN B BUS CIRCUITS SHORTED TO VOLTAGE
Turn the ignition off.
Disconnect the Multi-Purpose Module (Police And Taxi Interface Mod-
ule-PTIM) C2 harness connector.
Disconnect the scan tool from the DLC.
Turn the ignition on.
Measure the voltage of the VSIM CAN B Bus circuits.
Is the voltage above 6.0 volts for either circuit?
Yes
>> Repair the VSIM CAN B Bus circuit(s) for a short to voltage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
No
>> Inspect the wiring and connectors for damage or shorted
circuits. If ok, replace the Multi-Purpose Module (Police And
Taxi Interface Module-PTIM) in accordance with the service
information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
LX
MESSAGE CENTER - ELECTRICAL DIAGNOSTICS
8M - 133
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