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Pinpoint Test T: The Reversing Lamps Are On Continuously
Reversing Lamps
Pinpoint Tests
Pinpoint Test T: The Reversing Lamps Are On Continuously
Refer to Wiring Diagram Set 93, Reversing Lamps for schematic and connector information. Diagrams By Number
Normal Operation
When the transmission is placed in REVERSE (R), the digital Transmission Range (TR) sensor, or the reversing lamp switch, routes the voltage to the reversing lamps.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Reversing lamp switch (manual transmission)
- Digital TR sensor (automatic transmission)
PINPOINT TEST T: THE REVERSING LAMPS ARE ON CONTINUOUSLY
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T1 CHECK THE REVERSING LAMPS VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Digital TR Sensor C167.
- Disconnect: Reversing Lamp Switch C169.
- Ignition ON.
- Do the reversing lamps continue to illuminate?
Yes
REPAIR circuit CET41 (BN/YE) for a short to voltage. TEST the system for normal operation.
No
For an automatic transmission, INSTALL a new digital TR sensor. REFER to Automatic Transmission - 5R44E and 5R55E Service and Repair. TEST the system for normal operation.
For a manual transmission, INSTALL a new reversing lamp switch. TEST the system for normal operation.
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