B10E9

B10E9-BLOWER MOTOR CONTROL CIRCUIT LOW (TIPM)

B10E9-Blower Motor Control Circuit Low (TIPM):

WHEN MONITORED
With the ignition on.

SET CONDITION
If the Totally Integrated Power Module (TIPM) detects an excessive current draw on the (C70) Blower Motor Control circuit for 20 micro seconds when blower motor operation is requested.

POSSIBLE CAUSES
- (C7) Blower motor control circuit shorted to ground
- Blower motor
- TIPM

Diagnostic Test

1. VERIFY DTC B10E9-BLOWER MOTOR CONTROL CIRCUIT LOW IS ACTIVE

Turn the blower control switch to off.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, erase TIPM DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
Turn the blower control switch to on.
With the scan tool, read TIPM DTCs.

Q: Does the scan tool display active: B10E9-BLOWER MOTOR CONTROL CIRCUIT LOW?

YES: Go To 2
NO: Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, corroded, or contaminated terminals. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test




2. CHECK FOR ACTIVE DTC B10E9-BLOWER MOTOR CONTROL CIRCUIT LOW WITH BLOWER MOTOR HARNESS CONNECTOR DISCONNECTED

Turn the blower control switch to off.
Disconnect the Blower Motor harness connector.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, erase TIPM DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
Turn the blower control switch to on.
With the scan tool, read TIPM DTCs.

Q: Does the scan tool display active: B10E9-BLOWER MOTOR CONTROL CIRCUIT LOW?

YES: Go To 3
NO: Replace the Blower Motor. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test




3. CHECK THE (C7) BLOWER MOTOR CONTROL CIRCUIT FOR A SHORT TO GROUND

Turn the ignition off.
Disconnect the TIPM C8 harness connector.
Measure the resistance of the (C7) Blower Motor Control circuit between ground and the Blower Motor harness connector.

Q: Is the resistance below 10k ohms?

YES: Repair the (C7) Blower Motor Control circuit for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the TIPM. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test