Pinpoint Test C: No Power in RUN

Steering Column Switches

Pinpoint Tests

Pinpoint Test C: No Power in RUN

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

Normal Operation

When the ignition switch is placed in the RUN position, fused ignition voltage is sent to:

- the Smart Junction Box (SJB) along circuit CDC34 (WH/OG).
- pin 85 of the run/start relay in the Battery Junction Box (BJB) along circuit CDC34 (WH/OG).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Run/start relay
- Ignition switch
- SJB
- BJB



PINPOINT TEST C: NO POWER IN RUN

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

NOTE: Verify that battery voltage is 10 volts or greater.

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C1 CHECK THE IGNITION SWITCH


- Carry out the Ignition Switch - Electrical Component Test.
- Is the ignition switch OK?

Yes
GO to C2.

No
INSTALL a new ignition switch. REFER to Ignition Switch Ignition Switch. TEST the system for normal operation.

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C2 CHECK FOR VOLTAGE AT THE SJB


- Ignition OFF.
- Disconnect: SJB C2280B.
- Ignition ON.
- Measure the voltage between SJB C2280B-45, circuit CDC34 (WH/OG), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to C3.

No
REPAIR circuit CDC34 (WH/OG). TEST the system for normal operation.

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C3 CHECK FOR IGNITION VOLTAGE AT THE RUN/START RELAY


- Ignition OFF.
- Connect: SJB C2280B.
- Disconnect: Run/Start Relay.
- Ignition ON.
- Measure the voltage between run/start relay, circuit CDC34 (WH/OG) and ground.




- Is the voltage greater than 10 volts?

Yes
GO to C4.

No
REPAIR circuit CDC34 (WH/OG). TEST the system for normal operation.

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C4 CHECK THE RUN/START RELAY


- Carry out the Mini ISO Relay Component Test.

- Is the relay OK?

Yes
GO to C5.

No
INSTALL a new relay. TEST the system for normal operation.

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C5 CHECK FOR BATTERY VOLTAGE AT THE RUN/START RELAY


- Measure the voltage between run/start relay circuit SDC02 (RD), and ground.




- Is the voltage greater than 10 volts?

Yes
GO to C6.

No
VERIFY battery voltage is 10 volts or greater. If OK, REPAIR or INSTALL a new BJB. TEST the system for normal operation.

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C6 CHECK FOR CORRECT SJB OPERATION


- Disconnect: SJB C2280b.
- Check the connector for:
- corrosion.
- pushed-out pins.
- spread terminal.
- Connect: SJB C2280b.
- Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new SJB. TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.

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