Pinpoint Test A: The DC/AC Inverter Does Not Operate Correctly - No Power At The AC Power Point/The AC Power Point LED Indicato
High-Voltage Converter/Inverter
Pinpoint Tests
Pinpoint Test A: The DC/AC Inverter Does Not Operate Correctly - No Power at the AC Power Point/The AC Power Point LED Indicator Flashes with the Key in the ON Position
Refer to Wiring Diagram Set 13, Power Distribution/SJB for schematic and connector information. Diagrams By Number
Normal Operation
The DC/AC inverter receives 12 volts DC from the Battery Junction Box (BJB) and the Smart Junction Box (SJB) and is wired to chassis ground. Power from the BJB is available at all times, regardless of ignition status. Power from the SJB is only available when the ignition is ON. Incoming DC power is internally converted to 60 Hz 110 volts AC power that is output to the AC power point.
NOTE: The electrical device that is powered by the AC power point must not exceed 150 watts.
NOTE: If the green LED is flashing, the AC power point may be overloaded, overheated or shorted. Unplug the electrical device from the AC power point and cycle the key. Refer to the Owner's Literature to determine if the electrical device is appropriate for the AC power point.
This pinpoint test is intended to diagnose the following:
- Fuses
- Wiring, terminals or connectors
- DC/AC inverter
- AC power point
PINPOINT TEST A: THE DC/AC INVERTER DOES NOT OPERATE CORRECTLY - NO POWER AT THE AC POWER POINT/THE AC POWER POINT LED INDICATOR FLASHES WITH THE KEY IN THE ON POSITION
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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A1 CHECK THE POWER SUPPLY CIRCUITS FOR VOLTAGE
- Ignition OFF.
- Disconnect: DC/AC Inverter C2293A.
- Ignition ON.
- Measure the voltage between DC/AC inverter C2293A-2, circuit CBP41 (BU), harness side and ground.
- Measure the voltage between DC/AC inverter C2293A-4, circuit SBB33 (RD), harness side and ground.
- Are the voltages greater than 10 volts?
Yes
GO to A2.
No
CHECK the Smart Junction Box (SJB) fuse 41 (15A) and Battery Junction Box (BJB) 33 (40A). If OK, REPAIR the circuit(s). 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
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A2 CHECK THE GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure the resistance between DC/AC inverter C2293A-6, circuit GD138 (BK/WH), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to A3.
No
REPAIR circuit GD138 (BK/WH). TEST the system for normal operation.
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A3 CHECK THE AC POWER OUTPUT CIRCUITS FOR AN OPEN
- Disconnect: AC Power Point C301.
- Disconnect: DC/AC Inverter C2293B.
- Measure the resistance between DC/AC inverter C2293B-6, circuit HYA01 (OG/GN), harness side and AC power point C301-3, circuit HYA01 (OG/GN), harness side.
- Measure the resistance between DC/AC inverter C2293B-3, circuit HYA02 (OG/WH), harness side and AC power point C301-1, circuit HYA02 (OG/WH), harness side.
- Are the resistances less than 5 ohms?
Yes
GO to A4.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
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A4 CHECK THE AC POWER OUTPUT CIRCUITS FOR A SHORT TOGETHER
- Measure the resistance between DC/AC inverter C2293B-6, circuit HYA01 (OG/GN), harness side and DC/AC inverter C2293B-3, circuit HYA02 (OG/WH), harness side.
- Is the resistance greater than 10,000 ohms?
Yes
GO to A5.
No
REPAIR the circuits. TEST the system for normal operation.
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A5 CHECK THE AC POWER OUTPUT CIRCUITS FOR A SHORT TO GROUND
- Measure the resistance between DC/AC inverter C2293B-6, circuit HYA01 (OG/GN), harness side and ground.
- Measure the resistance between DC/AC inverter C2293B-3, circuit HYA02 (OG/WH), harness side and ground.
- Are the resistances greater than 10,000 ohms?
Yes
GO to A6.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
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A6 CHECK THE AC POWER POINT FOR AN OPEN
- Measure the resistance between AC power point C301-1, component side and AC power point face side pin 2.
- Measure the resistance between AC power point C301-3, component side and AC power point face side pin 1.
- Are the resistances less than 5 ohms?
Yes
INSTALL a new DC/AC inverter. REFER to Direct Current/Alternating Current (DC/AC) Inverter Direct Current/Alternating Current (DC/AC) Inverter. TEST the system for normal operation.
No
INSTALL a new AC power point. REFER to Alternating Current (AC) Powerpoint Alternating Current (AC) Powerpoint. TEST the system for normal operation.
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