Pinpoint Test F: No Power in ACC - Vehicles With a Push Button Start System
Steering Column Switches
Pinpoint Test F: No Power in ACC - Vehicles With a Push Button Start System
Refer to Wiring Diagram Set 13, Power Distribution/SJB for schematic and connector information Electrical Diagrams.
Normal Operation
To place the vehicle in ACC mode, locate the Intelligent Access (IA) key inside the vehicle and press the start/stop switch once, for at least one second, without applying the brake pedal. When in ACC mode, the Body Control Module (BCM) module provides a ground for the coil (control) side of the run/acc relay located in the BCM (Body Control Module). The run/acc relay is serviced with the BCM (Body Control Module). The BCM (Body Control Module) also provides a ground for the coil side of the accessory delay relay located in the BCM (Body Control Module). The accessory delay relay is serviceable separately from the BCM (Body Control Module). When the vehicle is in ACC mode, ACCESSORY POWER ACTIVE will be displayed in the message center.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Accessory delay relay
- BCM (Body Control Module)
PINPOINT TEST F : NO POWER IN ACC - VEHICLES WITH A PUSH BUTTON START SYSTEM
NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
F1 VERIFY OTHER IGNITION MODES
- With the Intelligent Access (IA) key in the vehicle, press the start/stop switch twice without pressing the brake pedal.
Does the vehicle enter RUN mode?
Yes
GO to F2.
No
GO to Pinpoint Test E Pinpoint Test E: No Power in RUN/No Power in START - Vehicles With a Push Button Start System.
F2 CHECK THE ACCESSORY DELAY RELAY
- Disconnect: Accessory Delay Relay.
- Carry out the appropriate relay component test.
Does the relay pass the test?
Yes
GO to F3.
No
INSTALL a new accessory delay relay. TEST the system for normal operation.
F3 CHECK FOR POWER TO THE ACCESSORY DELAY RELAY
- Measure the voltage between accessory delay relay cavity 3 and ground.
Is the voltage greater than 10 volts?
Yes
GO to F4.
No
GO to F5.
F4 CHECK FOR POWER TO THE RUN/ACC RELAY
- Disconnect: BCM (Body Control Module) Fuse 10 (10A).
- Measure the voltage between BCM (Body Control Module) fuse 10 (10A), input side and ground.
Is the voltage greater than 10 volts?
Yes
GO to F6.
No
GO to F5.
F5 CHECK THE BCM (Body Control Module) BATTERY FEED CIRCUIT FOR AN OPEN
- Disconnect: BCM (Body Control Module) C2280G.
- Measure the voltage between BCM (Body Control Module) C2280G-1, circuit SDC02 (RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to F6.
No
VERIFY the 120A Mega fuse is OK. If OK, REPAIR circuit SDC02 (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.
F6 CHECK FOR CORRECT BCM (Body Control Module) OPERATION
- Disconnect all BCM (Body Control Module) connectors.
- Check the connectors for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all BCM (Body Control Module) connectors and make sure they are seated correctly.
- Connect: Accessory Delay Relay.
- Connect: BCM (Body Control Module) Fuse 10 (10A) (if previously disconnected).
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.