PRE-RELEASE
DTC B297B or B297C
| DTC B297B or B297C |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach..
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Diagnostic Procedure Instructions
has overviews of all diagnostic categories.
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| DTC Descriptor |
DTC B297B 5A: Driver door ajar, switch circuit malfunction
DTC B297C 5A: Passenger door ajar, switch circuit malfunction
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
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Driver Door Open Switch Signal
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B297B 5A
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B297B 5A
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B297B 5A
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-
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Passenger Door Open Switch Signal
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B297C 5A
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B297C 5A
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B297C 5A
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-
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Driver door handle switch ground
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--
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1
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--
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-
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Passenger door handle switch ground
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--
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1
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--
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-
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1. Opening Indication Malfunction
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| Circuit/System Description |
The keyless entry control module receives a discrete input signal from the driver and passenger doors from the door-ajar signal of the switch circuit. The driver-side window motor receives a discrete input signal from the driver door-not-closed switch circuit. The passenger-side window switch receives a discrete signal from the passenger door-not-closed switch circuit. Door-ajar switch circuits and door-not-closed switch circuits are integral parts of the door handle units. When a door is open the door-ajar and door-not-closed switch circuits close. When the door-ajar switches are closed, the door-ajar switch circuit is connected to ground. Window switches communicate door-not-closed signal data serially via the keyless entry control module
| Conditions for Running the DTC |
Battery voltage is between 9-16 V.
| Conditions for Setting the DTC |
B297B 5A: The keyless entry control module detects a difference between the driver door-not-closed and door-ajar signals when the door is open.
B297C 5A: The keyless entry control module detects a difference between the passenger door-not-closed and door-ajar signals when the door is open.
| Action Taken When the DTC Sets |
The keyless entry control module ignores input signals from the external door handle switch.
| Conditions for Clearing the DTC |
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The DTC will be current for as long as the fault is present.
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When the fault is no longer present, the DTC will be a history DTC.
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A history DTC will clear after 50 ignition cycles.
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| Reference Information |
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Power Door Locks Description and Operation
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Refer to
Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Refer to Control Module References for information on diagnostic tools
| Circuit/System Verification |
Ignition ON, observe the scan tool Interior Trunk Lid/Liftgate Window Unlatch Switch parameter while pressing and releasing the rear compartment lid release switch. The parameter should change between Active and Inactive.
| Circuit/System Testing |
| 1. |
Ignition OFF, disconnect the lead connector from the malfunctioning door handle assembly.
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| 2. |
Measure and check for less than 10 Ω between the ground lead listed below and ground.
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A23D Door handle assembly - Driver terminal 8
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A23P Door handle assembly - Passenger terminal 3
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If greater than the value given above, test the ground lead for an open circuit/high resistance.
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Ignition ON, verify that the following scan tool parameters are inactive:
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Driver door: Driver door-ajar switch
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Passenger door: Passenger door-ajar switch
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If not the specified value, test the signal circuit terminal for a short to ground. If it tests normal, replace the K84 Keyless Entry Control Module
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| 4. |
Install a 3 A fused jumper lead between the signal circuit listed below and ground. Verify with a scan tool that the driver door-ajar switch or passenger door-ajar switch is active.
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A23D Door handle assembly - Driver terminal 7
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A23P Door handle assembly - Passenger terminal 2
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If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K84 Keyless Entry Control Module.
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| 5. |
If all circuits function as normal, test or replace the door handle assembly.
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| Component Testing |
Trunk Release Switch
| 1. |
Ignition OFF, disconnect the harness connector at the appropriate door handle assembly.
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| 2. |
With the switch in the open position, test for infinite resistance between the circuit terminals listed below:
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Driver door handle assembly terminal 7 and ground terminal 8
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Passenger door handle assembly terminal 2 and ground terminal 3
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If the value does not match the above, replace door lock handle
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| 3. |
With the switch in the closed position, test for less than 5 Ω between the circuit terminals listed below.
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Driver door handle signal terminal 7 and ground terminal 8.
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Passenger door handle signal terminal 2 and ground terminal 3
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If greater than the value specified above, replace the door handle assembly
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| Repair Instructions |
Carry out Diagnostic Repair Verification when you have carried out the diagnostic procedures.
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Keyless Entry Control Module Replacement
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Front Side Door Lock Replacement
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Refer to
Control Module References
for Keyless Entry Control Module replacement, setup and programming.
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