Chrysler RG Voyager. Manual — part 358
Symptom:
VALVE POWER FEED FAILURE
When Monitored and Set Condition:
VALVE POWER FEED FAILURE
When Monitored:
Ignition ON. ABS Power Relay closed. Valve command for a particular
solenoid not present.
Set Condition:
Low feedback voltage from the low side of all the solenoids.
POSSIBLE CAUSES
INTERMITTENT DTC
ABS VALVE FUSE
ABS VALVE FUSED B(+) SUPPLY CIRCUIT OPEN
ABS VALVE FUSED B(+) CIRCUIT OPEN
ABS VALVE FUSED B(+) CIRCUIT INTERMITTENT SHORT TO GROUND
ABS VALVE FUSED B(+) CIRCUIT SHORT TO GROUND
DAMAGED CAB/CAB HARNESS CONNECTOR
CAB - GROUND CIRCUIT OPEN
CAB - INTERNAL FAULT
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read DTC’s.
With the DRBIII
t, erase DTC’s.
Turn the ignition off.
Turn the ignition on.
With the DRBIII
t, read DTC’s.
Does the DRBIII
t display VALVE POWER FEED FAILURE?
All
Yes
→ Go To 2
No
→ Go To 10
2
Turn the ignition off.
Remove and Inspect the ABS Valve fuse.
Is the ABS Valve fuse open?
All
Yes
→ Go To 3
No
→ Go To 6
33
BRAKES (20E)
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Visually inspect the ABS Valve Fused B(+) circuit in the wiring harness. Look for any
sign of an intermittent short to ground.
Is the wiring harness OK?
All
Yes
→ Go To 4
No
→ Repair the ABS Valve Fused B(+) circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the CAB harness connector.
Note: Check connector - Clean/repair as necessary.
Using a test light connected to 12 volts, probe the ABS Valve Fused B(+) circuit fuse
terminal.
Did the test light illuminate?
All
Yes
→ Repair the ABS Valve Fused B(+) circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Reconnect the CAB harness connector.
NOTE: The CAB harness connector must be reconnected for the results of
this test to be valid.
Using a test light connected to 12 volts, probe the ABS Valve Fused B(+) circuit fuse
terminal.
Did the test light illuminate?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the ABS Valve Fused B(+) fuse. If the fuse is open make
sure to check for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the CAB harness connector.
Inspect the CAB and CAB harness connector for damage.
Is there any broken, bent, pushed out, corroded or spread terminals?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 7
7
Turn the ignition off.
Using a 12-volt test light connected to ground, probe the B(+) supply at the ABS Valve
fuse terminal.
Did the test light illuminate?
All
Yes
→ Go To 8
No
→ Repair the ABS Valve Fused B(+) supply circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
34
BRAKES (20E)
VALVE POWER FEED FAILURE —
Continued
TEST
ACTION
APPLICABILITY
8
Reinstall the ABS Valve fuse.
Disconnect the CAB harness connector.
Using a 12-volt test light connected to ground, probe the ABS Valve Fused B(+) circuit
at the CAB harness connector.
Did the test light illuminate?
All
Yes
→ Go To 9
No
→ Repair the ABS Valve Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
9
Turn the ignition off.
Using a 12-volt test light connected to 12-volts, probe the ground circuits at the CAB
harness connector.
Did the test light illuminate?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Repair the CAB Ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
10
Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Test Complete.
35
BRAKES (20E)
VALVE POWER FEED FAILURE —
Continued
Symptom:
*BRAKE LAMP SWITCH INOPERATIVE
POSSIBLE CAUSES
CHECK BRAKE LAMP SWITCH OUTPUT
BRAKE LAMP SWITCH B+ OPEN
BRAKE LAMP SWITCH OPEN
BRAKE LAMP SWITCH OUTPUT CIRCUIT SHORT OR OPEN
CAB -- INTERNAL OPEN
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t in Inputs/Outputs, read the Brake Lamp Switch state.
Press and release the brake pedal.
Does the DRBIII
t display PRESSED and RELEASED?
All
Yes
→ The Brake Lamp Switch is OK.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Disconnect the Brake Lamp Switch harness connector.
Using a 12-volt test light connected to ground, check the Brake Lamp Switch Fused
B+ circuit.
Does the test light illuminate brightly ?
All
Yes
→ Go To 3
No
→ Repair the Brake Lamp Switch Fused B+ circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
3
Disconnect the Brake Lamp Switch harness connector.
Connect a jumper wire between the Brake Lamp Switch B+ and Brake Lamp Switch
Output circuits.
With the DRBIII
t in Inputs/Outputs, read the Brake Lamp Switch state.
Does the DRBIII
t display PRESSED?
All
Yes
→ Replace the Brake Lamp Switch in accordance with the Service
Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Disconnect the CAB harness connector.
Disconnect the Brake Lamp Switch harness connector.
Check the Brake Lamp Switch Output circuit for a short to voltage and for an open.
Is the Brake Lamp Switch Output circuit shorted or open?
All
Yes
→ Repair the Brake Lamp Switch Output circuit for a short to
voltage or an open.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
36
BRAKES (20E)
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