Isuzu 1999 RODEO Workshop Manual page 2583

9J1–22 RESTRAINT CONTROL SYSTEM
5. This test determines whether the malfunction is in
CKT IB08–YEL/RED.
Diagnostic Aids:
An intermittent condition is likely to be caused by a short
to ground in the passenger air bag assembly circuit.
Inspect CKTs IB07–YEL/GRN and IB08–YEL/RED
carefully for cutting or chafing. If the wiring pigtail of the
passenger air bag assembly is damaged, the component
must be replaced.
DTC 18 Passenger Deployment Loop Short To Ground
Step
1 Was the "SRS Diagnostic System Check" performed?
2 1. When measurements are requested in this chart use J–39200
DVM with correct terminal adapter from J–35616–A.
2. Ignition switch "OFF."
3. Connect scan tool data link connector. Follow directions as
given in the scan tool operator's manual.
4. Ignition switch "ON."
5. Read passenger sense LO.
Is passenger sense LO less than 1.5 volts?
3 1. Ignition switch "OFF."
2. Disconnect passenger air bag assembly yellow 2–pin
connector behind the glove box assembly..
3. Leave driver air bag assembly connected.
Connect SRS driver / passenger load tool J–41433 and
appropriate adapter to passenger air bag assembly harness
connector.
4. Ignition switch "ON."
Is DTC 18 current?
4 1. Ignition switch "OFF."
2. Disconnect SRS driver / passenger load tool.
3. Measure resistance on SDM harness connector from terminal
"15" to terminal "6" (ground).
Does J–39200 display "0L" (infinite)?
5 Measure resistance on SDM harness connector from terminal "6"
"16" to terminal (ground).
Does J–39200 display "0L" (infinite)?
6 1. Reconnect all components, ensure all component are properly
mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Action Yes
Go to the "SRS
Diagnostic
Go to Step 2 System Check."
Go to Step 3 Go to Chart A.
Ignition switch
passenger air
bag assembly.
Go to Step 4
Go to Step 6
Replace SRS
Go to Step 5 Go to Step 6
Replace SRS
Go to Chart A. Go to Step 6
Repeat the "SRS
Diagnostic
System Check." Go to Step 6
No
"OFF."
Replace
harness.
harness.