B10B3-VISCOUS/CABIN HEATER RELAY CONTROL OPEN CIRCUIT

For a complete wiring diagram Refer to Section 8W

Diagnostic Test

NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions under which the DTC was set. Some of these conditions are displayed on the scan tool at the same time the DTC is displayed.

NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when checking for an active DTC.

• Go To2

• Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

• Go To3

• Repair the ASD Relay Output circuit for an open.
• Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

• Replace the Viscous/Cabin Heater Relay Fan Relay.
• Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

• Go To4

• Go To5

• Repair the Viscous/Cabin Heater Relay Control circuit for a short to ground.
• Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

• Replace and program the Engine Control Module in accordance with the Service Information.
• Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

• Repair the Viscous/Cabin Heater Relay Control circuit for an open.
• Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).