Chrysler Pacifica. Manual — part 174
Symptom:
RUN/ACCESSORY RELAY OPEN - IPM
When Monitored and Set Condition:
RUN/ACCESSORY RELAY OPEN - IPM
When Monitored:
Continuously.
Set Condition:
The output is off and a open condition exists. Time to mature 1 second.
POSSIBLE CAUSES
INTERMITTENT CONDITION
B+ CIRCUIT OPEN
RUN/ACCESSORY RELAY OPEN
IPM
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase DTCs.
Turn the ignition off, wait 30 seconds, then turn the ignition on.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Go To 2
No
→ The condition that caused the symptom is not currently present.
Refer to any Technical Service Bulletins (TSBs) that may apply.
Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Remove the Run/Accessory Relay from the IPM.
Using a 12-volt test light connected to ground, probe cavity 86 of the Run/Accessory
relay connector.
Is the test light illuminated?
All
Yes
→ Go To 3
No
→ Check the B+ feed to the IPM for an open. If OK, replace the IPM
in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
693
IGNITION, POWER, ACCESSORY
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Install a substitute relay in place of the existing Run/Accessory Relay.
With the DRBIII
t, erase DTCs.
Turn the ignition off, wait 30 seconds, then turn the ignition on.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Replace the IPM in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the original Run/Accessory Relay in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
694
IGNITION, POWER, ACCESSORY
RUN/ACCESSORY RELAY OPEN - IPM —
Continued
Symptom:
RUN/ACCESSORY RELAY SHORT TO BATTERY - IPM
When Monitored and Set Condition:
RUN/ACCESSORY RELAY SHORT TO BATTERY - IPM
When Monitored:
Continuously.
Set Condition:
The output is on and a short to battery condition exists. Time to mature
1 second.
POSSIBLE CAUSES
INTERMITTENT CONDITION
RUN/ACCESSORY RELAY
IPM
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase DTCs.
Turn the ignition off, wait 30 seconds, then turn the ignition on.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Go To 2
No
→ The condition that caused the symptom is not currently present.
Refer to any Technical Service Bulletins (TSBs) that may apply.
Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Install a substitute relay in place of the existing Run/Accessory Relay.
With the DRBIII
t, erase DTCs.
Turn the ignition on.
With the DRBIII
t, read DTCs.
Did this DTC reset?
All
Yes
→ Replace the IPM in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the original Run/Accessory Relay in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
695
IGNITION, POWER, ACCESSORY
Symptom:
RUN/START HARDWIRE FAILURE - BCM
When Monitored and Set Condition:
RUN/START HARDWIRE FAILURE - BCM
When Monitored:
When the BCM is powered up.
Set Condition:
The BCM detects 0 volts on the Ignition Switch Output (Run-Start) circuit
hardwire input and the Ignition MUX input is
9Run9 or 9Start9 for 2 seconds.
POSSIBLE CAUSES
IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
BCM
TEST
ACTION
APPLICABILITY
1
NOTE: Diagnose and repair any IPM Ignition Mismatch or BCM Ignition
MUX DTC’s before proceeding with this test.
Using the wiring diagram/schematic as a guide, check the Ignition Switch Output
(Run-Start) circuit for an open between the BCM C2 harness connector and the
Ignition Switch harness connector.
Was an open circuit condition found?
All
Yes
→ Repair the Ignition Switch Output (Run-Start) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ With the DRBIIIt, erase DTCs. Turn the ignition off, wait 10
seconds, then turn the ignition on. If this no open circuit condition
exists, replace the BCM in accordance with the Service Informa-
tion.
Perform BODY VERIFICATION TEST - VER 1.
696
IGNITION, POWER, ACCESSORY
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