Pinpoint Test A: No Power in All Ignition Switch Positions - Vehicles With An Ignition Switch

Steering Column Switches

Pinpoint Test A: No Power in All Ignition Switch Positions - Vehicles With an Ignition Switch

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

Normal Operation

The ignition switch receives fused battery voltage from Central Junction Box (CJB) fuse 1 (15A). The ignition switch distributes this voltage to the PCM and/or the CJB (Central Junction Box) depending on the ignition switch position.

This pinpoint test is intended to diagnose the following:

- CJB (Central Junction Box) fuse

- Battery Junction Box (BJB) fuse

- Wiring, terminals or connectors

- Ignition switch

PINPOINT TEST A : NO POWER IN ALL IGNITION SWITCH POSITIONS - 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 multimeter probes.

A1 CHECK FOR POWER TO CJB (Central Junction Box) FUSE 1 (15A)

- Disconnect: CJB (Central Junction Box) Fuse 1 (15A).

- Measure the voltage between CJB (Central Junction Box) fuse 1 (15A), circuit SBP01 (RD), input side and ground.





Is the voltage greater than 10 volts?

Yes
GO to A2.

No
VERIFY BJB (Battery Junction Box) fuse 5 (60A) is OK. If OK, REPAIR circuit SBB05 (GY/RD). If not OK, REFER to the Wiring Diagrams to identify the possible cause of the circuit short Electrical Diagrams. TEST the system for normal operation.

A2 CHECK CJB (Central Junction Box) FUSE 1 (15A)

- Check fuse: CJB (Central Junction Box) fuse 1 (15A).

Is the resistance less than 5 ohms?

Yes
GO to A3.

No
REFER to the Wiring Diagrams to identify the possible cause of the circuit short Electrical Diagrams. TEST the system for normal operation.

A3 CHECK FOR POWER TO THE IGNITION SWITCH

- Connect: CJB (Central Junction Box) Fuse 1 (15A).

- Disconnect: Ignition Switch C250.

- Measure the voltage between ignition switch C250-4, circuit SBP01 (RD), harness side and ground.





Is the voltage greater than 10 volts?

Yes
INSTALL a new ignition switch. REFER to Ignition Switch Service and Repair. TEST the system for normal operation.

No
VERIFY in-line connector C212 is OK. If not OK, REPAIR as necessary.

If OK, REPAIR circuit SBP01 (RD). TEST the system for normal operation.