Step
| Action
| Value(s)
| Yes
| No
|
1
| Inspect the fuse block for an open in IP-IGN fuse block.
Is the IP-IGN fuse open?
| --
| Go to
Step
2
| Go to
Step 3
|
2
|
- Repair the short to ground in CKT 39.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
3
|
- Disconnect the instrument cluster head-up display (HUD) connector.
- Use a J 39200
digital
multimeter (DMM) in order to measure the resistance between the instrument
cluster HUD harness connector terminal A8 and ground.
Is the measured resistance to ground within the specified value?
| 0-3 ohms
| Go to
Step 5
| Go to
Step 4
|
4
|
- Repair any opens, a poor connection, or a short to B+ in CKT 1550
between the instrument cluster HUD harness connector terminal A8 and G200.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
5
|
- Disconnect the instrument cluster HUD dimmer switch.
- Turn the ignition switch to the RUN position.
- Use a J 39200
digital
multimeter (DMM) in order to measure the voltage between the instrument
cluster HUD dimmer switch harness connector terminal A and ground.
Is the measured voltage within the specified range?
| 9-14 Volts
| Go to
Step 7
| Go to
Step 6
|
6
|
- Repair any opens, a poor connection, or a short to ground in CKT 39
between the instrument cluster HUD dimmer switch harness connector terminal
A and the fuse block IP-IGN fuse.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
7
|
- Turn the ignition switch to the OFF position.
- Reconnect the instrument cluster HUD harness connector.
- Connect a fused 10 amp jumper between the instrument cluster
HUD dimmer switch harness connector terminals A and F.
- Connect a fused 10 amp jumper between the instrument cluster
HUD dimmer switch harness connector terminals A and C.
- Turn the ignition switch to the RUN position.
Is the instrument cluster HUD operational?
| --
| Go to
Step 11
| Go to
Step 8
|
8
| Inspect for any opens, poor connection, or a short to ground in CKT 622
between the instrument cluster HUD dimmer switch harness connector terminal
F and the instrument cluster HUD harness connector terminal A1.
Is the wiring CKT 662 open, shorted to ground, or showing signs
of excessive resistance?
| --
| Go to
Step 9
| Go to
Step 10
|
9
|
- Repair CKT 622 between the instrument cluster HUD dimmer
switch harness connector terminal F and the instrument cluster HUD harness
connector terminal A1, as needed.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
10
|
- Replace the instrument cluster head-up display (HUD). Refer to
Head Up Display Module Replacement
.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
11
|
- Replace the instrument cluster head-up display (HUD) dimmer switch.
Refer to
Head Up Display Switch Replacement
.
- Inspect the system.
Is the repair complete?
| --
| System OK
| --
|
