Table of Contents
Advertisement
DRIVEABILITY - DIESEL
P1643-VISCOUS HEATER RELAY OPEN CIRCUIT —
TEST
6
Turn the ignition off.
Remove the Viscous Heater Relay from the PDC.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the Viscous Heater Relay Control
circuit.
Is the resistance above 1000 ohms?
Yes → Go To 7
→ Repair the Viscous Heater Relay Control circuit for a short to
No
7
Turn the ignition off.
Remove the Viscous Heater Relay from the PDC.
Disconnect the ECM harness connectors.
Measure the resistance of the Viscous Heater Relay Control circuit.
Is the resistance below 10.0 ohms?
Yes → Replace and program the Engine Control Module in accordance
→ Repair the Viscous Heater Relay Control circuit for an open.
No
ACTION
ground.
Perform ROAD TEST VERIFICATION - VER-2.
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
196
Continued
APPLICABILITY
All
All
Advertisement
Table of Contents
