Dodge Caliber. Manual — part 799
3.
(B16) BRAKE SIGNAL 2 CIRCUIT
Turn the ignition on.
Using a 12 volt test light connected to ground, check the (B16) Brake
Signal 2 circuit in the Powertrain Control Module (PCM) harness con-
nector while pressing and releasing the brake pedal several times.
Does the test light change from illuminated when the pedal is
pressed to not illuminated when the pedal is released?
Yes
>> Go to 11
No
>> Go to 7
4.
(Z967) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Stop Lamp Switch connector.
Using a 12 volt test light connected to 12 volts, check the (Z967)
Ground circuit in the Stop Lamp Switch harness connector.
NOTE: The test light should be illuminated and bright. Compare
the brightness to that of a direct connection to the battery.
Is the test light illuminated and bright?
Yes
>> Go to 5
No
>> Repair the (Z967) Ground circuit for an open circuit or high
resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING).
5.
(B15) BRAKE SIGNAL 1 CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (B15) Brake Signal 1
circuit in the Stop Lamp Switch harness connector.
Is the resistance above 100 ohms?
Yes
>> Go to 6
No
>> Repair the (B15) Brake Signal 1 circuit for a short to
ground.
Perform the PCM Verification Test Ver. 1 (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING).
PM
ENGINE ELECTRICAL DIAGNOSTICS - GPEC
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6.
(B15) BRAKE SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE
Measure the resistance of the (B15) Brake Signal 1 circuit between the
Stop Lamp Switch harness connector and the Powertrain Control Mod-
ule (PCM) harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go to 10
No
>> Repair the (B15) Brake Signal 1 circuit for an open circuit or
high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING).
7.
(F202) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Stop Lamp Switch connector.
Turn the ignition on.
Using a 12 volt test light connected to ground, check the (F202) Fused
Ignition Switch Output (Run-Start) circuit in the Stop Lamp Switch har-
ness connector.
NOTE: The test light should be illuminated and bright. Compare
the brightness to that of a direct connection to the battery.
Is the test light illuminated and bright?
Yes
>> Go to 8
No
>> Repair the (F202) Fused Ignition Switch Output (Run-Start)
circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
8.
(B16) BRAKE SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE
Measure the voltage of the (B16) Brake Signal 2 circuit in the Stop
Lamp Switch harness connector.
Is there any voltage present?
Yes
>> Repair the (B16) Brake Signal 2 circuit for a short to volt-
age.
Perform the PCM Verification Test Ver. 1 (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING).
No
>> Go to 9
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ENGINE ELECTRICAL DIAGNOSTICS - GPEC
PM
9.
(B16) BRAKE SIGNAL 2 CIRCUIT OPEN OR HIGH RESISTANCE
Measure the resistance of the (B16) Brake Signal 2 circuit between the
Stop Lamp Switch harness connector and the Powertrain Control Mod-
ule (PCM) harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go to 10
No
>> Repair the (B16) Brake Signal 2 circuit for an open circuit or
high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING).
10.
STOP LAMP SWITCH
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Stop Lamp Switch
and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
>> Repair as necessary.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
No
>> Replace the Stop Lamp Switch in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
11.
POWERTRAIN CONTROL MODULE (PCM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Stop Lamp Switch
and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
>> Repair as necessary.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
No
>> Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
PM
ENGINE ELECTRICAL DIAGNOSTICS - GPEC
9 - 485
P0573-BRAKE SWITCH 1 STUCK OFF
For a complete wiring diagram Refer to Section 8W
9 - 486
ENGINE ELECTRICAL DIAGNOSTICS - GPEC
PM
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