Fuel Gauge Always Indicates Full Gas
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important:: Before performing the diagnostics below, perform a diagnostic circuit check and repair DTC's P0461, P0462, or P0463 pertaining to the fuel tank senders. | ||||
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Is the resistance greater than the value given? | 0.5ohms | Go to Step 3 | Go to Step 4 |
3 | Locate and repair the open or cause of resistance in CKT 30 (PPL) between VCM connector C1 and the IP Cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
4 | Replace the I/P Cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | -- | |
Fuel Gauge Always Indicates Full Dual Tank Diesel
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Does the fuel gauge go to Empty? | -- | Go to Step 6 | Go to Step 3 |
3 |
Is continuity present? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace the I/P Cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | -- | |
5 | Locate and repair the open in CKT 30 (PPL) between the Fuel Pump Balance Module and the I/P Cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
6 | Connect a J 39200 DMM (continuity) between cavity E of the Fuel Pump and Balance Module connector and ground. Is continuity present? | -- | Go to Step 7 | Go to Step 13 |
7 | Connect a J 39200 DMM (ohms) between cavities B and E of the Fuel Pump and Balance Module connector. Does the reading indicate the value given? | 0ohms Empty/90ohms Full | Go to Step 14 | Go to Step 8 |
8 |
Does the reading indicate the value given? | 0ohms Empty/90ohms Full | Go to Step 10 | Go to Step 9 |
9 | Replace the Secondary Fuel Gauge Sender. Is the repair complete? | -- | -- | |
10 | Connect a J 39200 DMM (continuity) between cavity E of the Fuel Pump and Balance Module connector and cavity A of the Secondary Fuel Gauge Sender. Is continuity present? | -- | Go to Step 11 | Go to Step 12 |
11 | Locate and repair the open in CKT 975 (LT BLU) between the Fuel Pump and Balance Module and the Secondary Fuel Gauge Sender. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
12 | Locate and repair the open in CKT 451 (BLK/WHT) between the Secondary Fuel Gauge Sender and G104. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
13 | Locate and repair the open in CKT 451 (BLK/WHT) between the Fuel Pump and Balance Module and G104. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
14 | Connect a J 39200 DMM (ohms) between cavities C and E of the Fuel Pump and Balance Module connector. Does the reading indicate the value given? | 0ohms Empty/90ohms Full | Go to Step 20 | Go to Step 15 |
15 |
Does the reading indicate the value given? | 0ohms "Empty"/90ohms "Full" | Go to Step 16 | Go to Step 19 |
16 | Connect a J 39200 DMM (continuity) between cavity E of the Fuel Pump and Balance Module connector and cavity A of the Primary Fuel Gauge Sender. Is continuity present? | -- | Go to Step 17 | Go to Step 18 |
17 | Locate and repair the open in CKT 970 (DK BLU/WHT) between the Fuel Pump and Balance Module and the Primary Fuel Gauge Sender. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
18 | Locate and repair the open in CKT 451 (BLK/WHT) between the Primary Fuel Gauge Sender and G104. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
19 | Replace the Primary Fuel Gauge Sender. Refer to Fuel Sender Assembly Replacement in Engine Controls. Is the repair complete? | -- | -- | |
20 | Replace the Fuel Pump and Balance Module. Is the repair complete? | -- | -- |
Fuel Gauge Always Indicates Full Single Tank, Diesel
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Does the fuel gauge read empty? | -- | Go to Step 6 | Go to Step 3 |
3 | Connect a J 39200 DMM (ohms) between cavities A & B of the Fuel Pump and Sender. Does the resistance read according to the fuel level? | 0 ohms Empty/90 ohms Full | Go to Step 4 | Go to Step 6 |
4 |
Does the resistance read according to fuel level? | 0 ohms Empty/90 ohms Full | Go to Step 5 | Go to Step 7 |
5 | Replace the I/P Cluster. Refer to Instrument Cluster Replacement Is the repair complete? | -- | -- | |
6 | Replace the Fuel Pump and Sender. Refer to Fuel Sender Assembly Replacement in Engine Controls. Is the repair complete? | -- | -- | |
7 | Locate and repair the open in CKT 30 (PPL) between the I/P Cluster and Fuel Pump and Sender. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
