Pinpoint Test B: No Power in ACC - Vehicles With an Ignition Switch

Steering Column Switches

Pinpoint Test B: No Power in ACC - Vehicles With an Ignition Switch

Refer to Wiring Diagram Set 13, Power Distribution for schematic and connector information. Diagrams By Number

Normal Operation

When the ignition switch is in the ACC position, voltage is provided to Central Junction Box (CJB) fuses 19 (7.5A) and 26 (7.5A).

This pinpoint test is intended to diagnose the following:

- CJB fuse(s)
- Wiring, terminals or connectors
- Ignition switch

PINPOINT TEST B: NO POWER IN ACC - VEHICLES WITH AN IGNITION SWITCH

NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

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B1 CHECK THE IGNITION ACC CIRCUIT FOR AN OPEN

- Ignition OFF.
- Disconnect: Ignition Switch C250.
- Disconnect: CJB Fuse 26 (7.5A).
- Measure the resistance between CJB fuse 26 (7.5A), circuit CDC33 (VT/GN), input cavity and ignition switch C250-6, circuit CDC33 (VT/GN), harness side.




- Is the resistance less than 5 ohms?

Yes
VERIFY CJB fuses 19 (7.5A) and 26 (7.5A) are OK.

If OK, INSTALL a new ignition switch. REFER to Ignition Switch Ignition Switch. TEST the system for normal operation.

If not OK, REFER to the Wiring Diagrams to identify the possible cause of the circuit short. TEST the system for normal operation. Diagrams By Number

No
REPAIR circuit CDC33 (VT/GN). TEST the system for normal operation.

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