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DRIVEABILITY - NGC
P0573-BRAKE SWITCH #1 CIRCUIT HIGH —
TEST
3
Turn the ignition off.
Disconnect the PCM harness connectors.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K29) Brake Switch Signal circuit from the Brake
Lamp Switch harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 4
No
4
Measure the resistance between the (Z2) Ground circuit and ground at the Brake
Lamp Switch harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 5
No
5
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
→ Repair the open in the (K29) Brake Switch Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Repair the open in the (Z1) Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Replace and program the Powertrain Control Module in accor-
dance Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Continued
442
APPLICABILITY
All
All
All
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