TEST ACTION APPLICABILITY
6 Disconnect the Brake Lamp Switch harness connector.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, probe the (V32) Speed Control Power
Supply circuit in the Brake Lamp Switch harness connector.
NOTE: It is necessary to HOLD the Cruise Control Switch in the ON position
to get an accurate reading.
Does the test light illuminate brightly?
All
Yes → Replace the Brake Lamp Switch.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 7
7 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
235
DRIVEABILITY - NGC
P0594-SPEED CONTROL SERVO POWER CIRCUIT — Continued
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