Dodge ZB 2005 Service Manual page 1308

*BRAKE SWITCH SENSE STATUS DOES NOT CHANGE ON DRBIII —
Continued
TEST
5 Disconnect the PCM harness connectors.
Measure the resistance of the (K29) Brake Lamp Switch Signal circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the open in the (K29) Brake Lamp Switch Signal circuit.
No
6 Measure the resistance between ground and the (K29) Brake Lamp Switch Signal
circuit.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K29) Brake Lamp Switch
→ Go To 7
No
7 Connect the PCM harness connectors.
Connect the Brake Lamp Switch harness connector.
Brake pedal must be depressed in the next step.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, probe the (K29) Brake Lamp Switch
Signal circuit at the Brake Lamp Switch harness connector.
Is the test light illuminated and bright?
Yes → Go To 8
→ Replace or adjust the brake switch.
No
8 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
DRIVEABILITY - GAS
187
APPLICABILITY
All
All
All
All