Dodge Caliber. Manual — part 226
7.
(D55) CAN B BUS (+) CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
Disconnect the TIPM C3 harness connector.
Measure the resistance between ground and the (D55) CAN B Bus (+)
circuit.
Is the resistance above 1000.0 ohms?
Yes
>> Go To 8
No
>> Disconnect each CAN B Bus module one at a time while
observing the resistance to determine if the short is caused
by an internal short within a module. Replace the module, in
accordance with the service information, that when discon-
nected eliminates the short to ground. If the short condition
is still present with all CAN B Bus modules disconnected
use the Wiring Diagrams to help isolate and repair the
(D55) CAN B Bus (+) circuit for a short to ground.
Perform the BODY VERIFICATION TEST – VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
8.
(D54) CAN B BUS (-) CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (D54) CAN B Bus (-)
circuit.
Is the resistance above 1000.0 ohms?
Yes
>> Inspect the wiring and connectors for damage. If ok, replace
and program the Totally Integrated Power Module in accor-
dance with the service information. Perform the BODY
VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/
ELECTRONIC CONTROL MODULES - STANDARD PRO-
CEDURE).
No
>> Disconnect each CAN B Bus module one at a time while
observing the resistance to determine if the short is caused
by an internal short within a module. Replace the module, in
accordance with the service information, that when discon-
nected eliminates the short to ground. If the short condition
is still present with all CAN B Bus modules disconnected
use the Wiring Diagrams to help isolate and repair the
(D54) CAN B Bus (-) circuit for a short to ground.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES - STANDARD PROCEDURE).
PM
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 15
9.
(D55) CAN B BUS (+) CIRCUIT SHORTED TO THE (D54) CAN B BUS (-) CIRCUIT
Turn the ignition off.
Disconnect the TIPM C3 harness connector.
Measure the resistance between the (D55) CAN B Bus (+) circuit and
(D54) CAN B Bus (-) circuit.
Is any resistance present?
Yes
>> Disconnect each CAN B Bus module one at a time while
observing the resistance to determine if the short is caused
by an internal short within a module. Replace the module, in
accordance with the service information, that when discon-
nected eliminates the short between the two circuits. If the
short condition is still present with all CAN B Bus modules
disconnected use the Wiring Diagrams to help isolate and
repair the (D55) CAN B Bus (+) circuit for a short to the
(D54) CAN B Bus (-) circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL MODULES
-
STANDARD PROCEDURE).
No
>> Inspect the wiring and connectors for damage. If ok, replace and program the Totally Integrated Power
Module in accordance with the service information. Perform the BODY VERIFICATION TEST – VER 1.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
8E - 16
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
PM
U0021-CAN B BUS (+) CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W.
PM
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 17
•
When Monitored:
With the ignition on and battery voltage between 10 and 16 volts.
•
Set Condition:
The TIPM detects the (D55) CAN B Bus (+) circuit is open.
Possible Causes
CAN B BUS TERMINAL PUSH OUT
SPREAD CAN B BUS TERMINAL
(D55) CAN B BUS (+) CIRCUIT OPEN
INTERNAL OPEN IN A CAN B BUS MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase TIPM DTC’s.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active TIPM DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
2.
ATTEMPT TO ISOLATE THE OPEN CONDITION
Turn the ignition on.
With the scan tool select ECU View.
Verify that all CAN B Bus modules are communicating with the scan
tool.
NOTE: A red X will be next to a module that is not communicating,
indicating that the module is not active on the Bus network. A
green check indicates that the module is active on the Bus net-
work.
NOTE: If any module is not communicating, perform the appropri-
ate no response test procedure before proceeding.
Turn the ignition off.
Gain access to the Totally Integrated Power Module C3 harness con-
nector, but do not disconnect.
Using a fused jumper wire, connect one end to ground and with the
other end backprobe the CAN B Bus (-) circuit at the TIPM C3 harness
connector.
Turn the ignition on.
With the scan tool monitor the ECU View screen and document all modules that display a red X.
Are there any red X’s displayed next to any CAN B Bus modules?
Yes
>> Go To 3
No
>> Check backprobe connection to ground, make sure it is proper. The CAN B Bus open DTC may no
longer be active, it may be stored. Check all module connections.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES - STANDARD PROCEDURE).
8E - 18
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
PM
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст