Intake Air Heater Relay: Service and Repair

REMOVAL

Fig.30 Intake Manifold Air Heater Relays:

The 2 intake manifold air heater relays are located in the engine compartment. They are attached to a common bracket. This bracket is attached to the right battery tray (Fig. 30).

The mounting bracket and both relays are replaced as an assembly.

1. Disconnect both negative battery cables at both batteries.
2. Disconnect four relay trigger wires at both relays. Note position of wiring before removing.
3. Lift four rubber shields from all 4 cables.
4. Remove four nuts at cable connectors. Note position of wiring before removing.
5. Remove relay mounting bracket bolts and remove relay assembly.

INSTALLATION
1. Install relay assembly to battery tray Tighten mounting bolts to 4.5 Nm (40 in.lbs.) torque.
2. Connect eight electrical connectors to relays.
3. Connect battery cables to both batteries.