Chrysler PT Cruiser. Manual — part 57
Symptom:
*ANY PCI BUS INDICATOR INOPERATIVE
POSSIBLE CAUSES
INTERMITTENT CONDITION
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
NOTE: Refer to the Service Information: Diagnosis and Testing - Instrument
Cluster Lamps for complete list of Indicators that will illuminate during the
Self Test.
NOTE: Ensure that the Instrument Cluster communicates on the PCI Bus.
NOTE: Diagnose and repair any PCM, ACM, ABS, RKE, or SKIM DTCs before
proceeding with this test.
Perform the Instrument Cluster self test.
Turn the ignition off.
Press and hold the Trip Reset button.
Turn the ignition on.
Did the LED in question illuminate?
All
Yes
→ The condition is intermittent. Monitor DRBIIIt parameters while
wiggling the related wire harness. Refer to any Technical Service
Bulletins (TSB) that may apply. Visually inspect the related
wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
215
INSTRUMENT CLUSTER
Symptom:
*BRAKE WARNING INDICATOR ALWAYS ON
POSSIBLE CAUSES
PARK BRAKE SWITCH
BRAKE WARNING INDICATOR DRIVER CIRCUIT SHORT TO GROUND (PARK BRAKE SWITCH)
BRAKE WARNING INDICATOR (FLUID LEVEL) SWITCH
RED BRAKE WARNING INDICATOR DRIVER CIRCUIT SHORT TO GROUND (FLUID LEVEL
SWITCH)
INSTRUMENT CLUSTER
POWERTRAIN CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Ensure that the Parking Brake is disengaged.
With the DRBIII
t in Inputs/Outputs, read the Parking Brake Switch state.
Does the DRBIII
t display 9Closed9 with the Parking Brake disengaged?
All
Yes
→ Go To 2
No
→ Go To 4
2
Turn the ignition off.
Disconnect the Park Brake Switch harness connector.
Turn the ignition on.
With the DRBIII
t in Inputs/Outputs, read the Parking Brake Switch state.
Does the DRBIII
t display 9Open9?
All
Yes
→ Replace the Park Brake Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Park Brake Switch harness connector.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance between ground and the Brake Warning Indicator Driver
circuit.
Is the resistance below 10,000 ohms (should be infinite)?
All
Yes
→ Repair the Brake Warning Indicator Driver circuit for a short to
ground (between the Park Brake Switch and the Instrument
Cluster).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
216
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
4
NOTE: Ensure that the brake fluid is properly filled to the correct level, and
the Base Brake system operates properly.
Turn the ignition on.
With the DRBIII
t in Miscellaneous Engine Status #1, read the Brake Low Fluid
Switch state.
Disconnect the Brake Low Fluid Switch harness connector.
With the DRBIII
t, read the Brake Low Fluid Switch state.
Did the DRBIII
t Brake Low Fluid Switch input change states?
All
Yes
→ Replace the Brake Warning Indicator (Fluid Level) Switch in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the Brake Warning Indicator (Fluid Level) Switch harness connector.
Disconnect the PCM C2 harness connector.
Measure the resistance between ground and the Red Brake Warning Indicator Driver
circuit.
Is the resistance below 10,000 ohms (should be infinite)?
All
Yes
→ Repair the Red Brake Warning Indicator Driver circuit for a short
to ground between the Brake Warning Indicator (Fluid Level)
Switch and the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Powertrain Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
217
INSTRUMENT CLUSTER
*BRAKE WARNING INDICATOR ALWAYS ON —
Continued
Symptom:
*BRAKE WARNING INDICATOR INOPERATIVE
POSSIBLE CAUSES
PARK BRAKE SWITCH
RED BRAKE WARNING INDICATOR DRIVER CIRCUIT OPEN (PARK BRAKE SWITCH)
INTERMITTENT CONDITION
BRAKE WARNING INDICATOR (FLUID LEVEL) SWITCH
BRAKE WARNING INDICATOR (FLUID LEVEL) SWITCH GROUND CIRCUIT OPEN
RED BRAKE WARNING INDICATOR DRIVER CIRCUIT OPEN (FLUID LEVEL SWITCH)
INSTRUMENT CLUSTER
POWERTRAIN CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
NOTE: The Brake Warning Indicator should illuminate during the bulb
check cycle, and will also illuminate during the Self Test.
Observe the Brake Warning Indicator during the bulb check or Instrument Cluster
Self Test.
Did the indicator illuminate?
All
Yes
→ Go To 2
No
→ Go To 8
2
NOTE: The Brake Warning Indicator illuminates with the Park Brake
engaged or with low Brake Fluid Level.
Is the Brake Warning Indicator inoperative with the use of the Park brake?
All
Yes
→ Go To 3
No
→ Go To 5
3
Turn the ignition off.
Disconnect the Park Brake Switch harness connector.
Connect a jumper wire between the Red Brake Warning Indicator circuit and ground.
Turn the ignition on and observe the Brake Warning Indicator.
Does the Indicator illuminate?
All
Yes
→ Replace the Park Brake Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
218
INSTRUMENT CLUSTER
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