B190E

B190E-DRIVER WINDOW SWITCH CIRCUIT LOW - DDM

B190E-Driver Window Switch Circuit Low - DDM:

WHEN MONITORED
Continuously

SET CONDITION
When the Driver Express Switch Driver Window Mux circuit is under 4.4 volts for over 100 ms.

POSSIBLE CAUSES
- (Q221) driver express switch driver window mux circuit short to ground
- (Q221) driver express switch driver window mux circuit shorted to the (Z421) driver express switch return circuit
- Driver window/door lock switch
- Driver door module

DIAGNOSTIC TEST

1. TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase DTC's
Operate the Driver Window Switch in both positions several times.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC's.

Q: Does the scan tool display B190E-DRIVER WINDOW SWITCH CIRCUIT LOW?

YES: Go To 2
NO: The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. DRIVER WINDOW/DOOR LOCK SWITCH SHORTED TO GROUND




With the scan tool, erase DTC's.
Disconnect the Driver Window/Door Lock Switch C2 connector.
Turn the ignition on.
With the scan tool, read DTC's.

Q: Does the scan tool display B190E-DRIVER WINDOW SWITCH CIRCUIT LOW?

NO: Replace the Driver Window/Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
YES: Go to 3

3. (Q221) DRIVER EXPRESS SWITCH DRIVER WINDOW MUX WIRE SHORT TO GROUND




Turn the ignition off.
Disconnect the Driver Door Module C2 connector.
Measure the resistance between ground and the (Q221) Driver Express Switch Driver Window Mux circuit in the Driver Door Module C2 connector.

Q: Is the resistance below 10000.0 ohms?

YES: Repair the (Q221) Driver Express Switch Driver Window Mux circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go to 4

4. (Q221) DRIVER EXPRESS SWITCH DRIVER WINDOW MUX WIRE SHORT TO THE (Z421) DRIVER EXPRESS SWITCH RETURN CIRCUIT




Measure the resistance between (Z421) Drive Express Switch Return circuit and the (Q221) Driver Express Switch Driver Window Mux circuit in the Driver Door Module C2 connector.

Q: Is the resistance below 1000.0 ohms?

YES: Repair the (Q221) Driver Express Switch Driver Window Mux circuit for a short to the (Z421) Driver Express Switch Return circuit.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test