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| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Door Handle Switch Signal | B3849 02 | 1 | 1 | -- |
Passenger Door Handle Switch Signal | B1474 02 | 1 | 1 | -- |
Left Rear Door Handle Switch Signal | B1534 02 | 1 | 1 | -- |
Right Rear Door Handle Switch Signal | B1535 02 | 1 | 1 | -- |
Driver Door Handle Switch Ground | -- | 1 | 1 | -- |
Passenger Door Handle Switch Ground | -- | 1 | 1 | -- |
Left Rear Door Handle Switch Ground | -- | 1 | 1 | -- |
Right Rear Door Handle Switch Ground | -- | 1 | 1 | -- |
1. Power Door Catch Malfunction | ||||
The driver exterior door handle switch signal circuit provides inputs to the keyless entry control module when the driver exterior door handle switch is activated. This input allows the keyless entry control module to detect a door open request. The keyless entry control module provides voltage to the driver exterior door handle switch via the driver door handle switch signal circuit. When the driver door handle is activated, the switch closes and the voltage signals from the keyless entry control module are pulled to ground.
Battery voltage is between 9-16 V.
The keyless entry control module detects the driver exterior door handle switch signal circuit is short-circuited to ground or closed for more than 180 s.
The keyless entry control module ignores inputs from the driver exterior door handle switch.
| • | The DTC will be current for as long as the fault is present. |
| • | When the fault is no longer present, the DTC will be a history DTC. |
| • | A history DTC will clear after 50 ignition cycles. |
Door Lock/Indicator Schematics
Power Door Latch Description and Operation
Control Module References for scan tool information
Ignition ON, observe the scan tool keyless entry control module Exterior Driver Door Handle Switch parameter while using the driver door handle. The parameter should change between Active and Inactive.
| ⇒ | If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K84 Keyless Entry Control Module. |
| ⇒ | If not the specified value, test the signal circuit terminal 2 for a open/high resistance. If the circuit tests normal, replace the K84 Keyless Entry Control Module. |
| ⇒ | If not the specified value, replace the B27D Door Handle Switch - Driver Exterior. |
| ⇒ | If greater than the specified range, replace the B27D Door Handle Switch - Driver Exterior. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for keyless entry control module replacement, setup, and programming |
| © Copyright Chevrolet. All rights reserved |
| © Copyright Chevrolet. All rights reserved |
